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This item is eligible for return within 30 days of receipt
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Availability:
In Stock.
Arrives
Tuesday, Jul 7
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Features
- VERSATILITY: 5 bits for slotted and Phillips fasteners
- EASE OF USE: Easily loosens frozen/rusted screws, nuts or bolts with the hand impact driver
- EFFICIENT: Tightens fasteners without stripping
- DURABILITY: Creates up to 200 foot pounds of torque when struck with a hammer
- FLEXIBILITY: Loosen and tighten Philips and slotted fasteners, as well as drive 3/8-inch sockets.
- Full Lifetime Warranty, refer to "Warranty & Support" section below for full details
Description
Designed to convert the force of a hammer blow into 200 foot pounds of torque, the Impact Tool Set loosens frozen fasteners quickly and easily. By using the included bit set, the hand impact driver can be used to both loosen and tighten Philips and slotted fasteners, as well as drive 3/8-inch sockets.
Manufacturer: CRAFTSMAN
Part Number: CMMT14104
Item Weight: 1.83 pounds
Product Dimensions: 10.39 x 4.96 x 1.22 inches
Item model number: CMMT14104
Size: 3/8- in
Color: Black Oxide
Power Source: Manual Winding
Maximum Power: 800 Watts
Item Package Quantity: 1
Number Of Pieces: 5
Head Style: Flat, Phillips
Compatible Fastener Range: 0.375 inches
Special Features: Portable
Included Components: (1) CMMT14104 3/8-in. IMPACT TOOL SET
Batteries Included?: No
Batteries Required?: No
Warranty Description: Full Lifetime Warranty
Date First Available: May 1, 2019
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jul 7
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 3/8- in
It does really well at knocking loose stuck screws. In my particular case, some bmw screws from 1995 that had never been loosened from factory. This made SHORT WORK of the job! Literally the first strike I saw movement. Before I bought this tool I had spent at least 3 hours messing around with the screws and almost stripping them with an undersize phillips bit. This kit came with the correct size bit (I believe it was a Phillips #3) and with that I was able to get a tight grip even on the damaged ones and first strike- movement! I just can't recommend it enough. This would be really good for demolition and stuff too, like dismantling an RV or something, things like that. I will also say that the bits are a good quality in themselves- I was able to adapt one to a normal driver through a series of shanks and a socket, and the bits do well. Overall, good value for the money and with the lifetime warranty, it's a no-brainer purchase. This tool has earned a permanent spot in my toolbox.
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Reviewed in the United States on March 8, 2025 by DG
Size: 3/8- in
Very heavy duty. Saved me when doing brakes on car. Everyone who does self car repair or a lot of home improvement should have one.
Reviewed in the United States on April 19, 2026 by scott farine
Size: 3/8- in
In my years as a DIY enthusiast, I have encountered countless tools that claim to deliver exceptional performance, but few have truly lived up to the hype. However, the CRAFTSMAN Hand Impact Driver, 3/8-Inch Set (CMMT14104), is a true game-changer. From its unparalleled power to its impressive build quality, this impact driver has become an indispensable tool in my arsenal. Allow me to share my personal experience with this extraordinary tool that has transformed my projects and earned my resounding 5-star rating. Unleashing Unrivaled Power: The first aspect that captivated me about the CRAFTSMAN Hand Impact Driver is its raw power. It effortlessly delivers precise and controlled impacts, allowing me to tackle even the toughest fastening tasks with ease. Whether I'm working on automotive repairs, woodworking projects, or general home improvements, this impact driver never fails to impress. Its torque output is simply unmatched, enabling me to remove stubborn bolts and screws effortlessly. Ergonomics and Durability: Crafted with utmost attention to detail, the CRAFTSMAN Hand Impact Driver showcases exceptional build quality. The ergonomic design ensures a comfortable grip, minimizing fatigue during extended use. The driver's handle features a textured surface, providing a secure and slip-free hold, even in sweaty or greasy conditions. Furthermore, the durable construction guarantees that this tool will withstand the test of time, making it a long-term investment that won't let you down. Versatility and Adaptability: One of the standout features of the CRAFTSMAN Hand Impact Driver is its remarkable versatility. It comes with a comprehensive set of 3/8-inch drive bits, allowing me to tackle an extensive range of fastening applications. From Phillips and slotted screws to hex and Torx bolts, this set has it all. Additionally, the driver's quick-change chuck enables swift bit changes, saving me precious time during my projects. Precise Control and Reduced Strain: When it comes to delicate tasks that require finesse, the CRAFTSMAN Hand Impact Driver truly shines. Its impact mechanism provides precise control, preventing over-tightening and reducing the risk of stripping screws or damaging materials. This precision has been a game-changer for me, particularly when working on delicate electronics or intricate woodworking projects. Moreover, the impact driver's effectiveness reduces the strain on my wrists and hands, making it an invaluable tool for anyone concerned about long-term joint health. Portability and Convenience: The CRAFTSMAN Hand Impact Driver is not only a powerhouse but also a portable companion. Its compact size allows for easy maneuverability in tight spaces, and it fits perfectly in my toolbox alongside other essential tools. Whether I'm working in my garage or on-site, this driver's lightweight design makes it effortlessly portable, ensuring that I have the right tool within arm's reach whenever I need it. Conclusion: In conclusion, the CRAFTSMAN Hand Impact Driver, 3/8-Inch Set (CMMT14104), has exceeded all my expectations. Its unmatched power, exceptional build quality, and versatility have made it an irreplaceable addition to my toolbox. The precision control, reduced strain, and convenient portability have simplified my projects and enhanced my overall DIY experience. Without a doubt, this impact driver has earned a resounding 5-star rating from me. If you're seeking a tool that combines power, precision, and durability, the CRAFTSMAN Hand Impact Driver is an investment that will transform the way you approach your projects.
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Reviewed in the United States on May 27, 2023 by Fadi Shamaan
Size: 3/8- in
I brought this to work to occasionally use on equipment. Only used it 2 or 3 times. I will say, it's done its job every time but the bits are pretty soft and I don't think I'll get many uses out of them, the phillips bit is starting to twist at the end. It's heavy and the build quality of the actual driver is good, just the bits won't last very long if it's something you use often.
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Reviewed in the United States on July 23, 2025 by Robert Gordon
Size: 3/8- in
Great quality, well made. Works like a charm for loosening locked fasteners.
Reviewed in the United States on March 8, 2026 by Bill Brezinski
Size: 3/8- in
Good tool.
Reviewed in the United States on April 2, 2026 by Becky
Size: 3/8- in
Works great. Just the thing I needed to get some stubborn screws out of my brake rotors. I don't know if they were rusted tight or just screwed super tight by the mechanic, but this thing got them right out. Avoided stripping the screws entirely.
Reviewed in the United States on March 16, 2026 Reviewed in the United States on March 16, 2026 by Lalilulelo
Size: 3/8- in
Ordered this for over-night delivery in order to remove a seized retaining screw on my car's brake rotors. This knocked it loose with just 2 blows, and i was able to complete the brake job in 30 min. Saved the day!!!!!
Reviewed in the United States on February 23, 2026 by Joe