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30-day refund / replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Nov 13 – Nov 14
Recently Viewed
At a glance
- Condition
- New
- Size
- 3/8- in
- Model
- CMMT14104
- Dimensions
- 10.39 x 4.96 x 1.22 in
- Weight
- 1.83 lb
- Color
- Black Oxide
- Power Source
- Manual Winding
- In the box
- (1) CMMT14104 3/8-in. IMPACT TOOL SET
Features 6
- 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.
Specs 14
| 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 |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 13 – Nov 14
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
Works Great
Size: 3/8- in
Basic tool and works great. No complaints. Good value. Durable. Using tool to remove rusted disc brake rotor screws.
Reviewed in the United States on August 25, 2026 by Stuart
Good for removing disc brake rotor screw
Size: 3/8- in
Nice tool, worked well to remove disc brake rotor screws
Reviewed in the United States on September 14, 2026 by Edward Jerome Grozalis
Excellent tool every DIY should own
Size: 3/8- in
This pool is an absolute lifesaver for any screws that are stuck or rusted on. Works on almost every screw I've tried it on
Reviewed in the United States on August 8, 2026 by Joey R.
Excellent tool
Size: 3/8- in
This impact driver is a must for DIY car brakes. Very affordable and reliable. Reason for the 4 store is because i received a used tool. It just came in a plastic bag with a few scratches and rear and tear with no original packaging. I had no choice but to use it since i needed the tool for a rotor job.
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Reviewed in the United States on July 7, 2026 by DubNation
A Great Tool That Saved Me A Lot of Frustration!
Size: 3/8- in
This tool was extremely helpful when I was putting new brakes and rotors on my daughter's car. They were the factory installed rotors and had the two rotor screws in there. I tried removing them with a normal screwdriver and they would not budge. I started damaging the screw trying to take it out to remove the rotor. I ordered this impact driver and was able to remove all of the remaining screws with very little trouble. Maybe 8 or 10 taps on the end of the tool and the screw started moving. Just pay attention to the direction you have the impact driver set to move and check it often because it can sometimes switch directions while you're smacking it.
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Reviewed in the United States on September 12, 2026 by BasementBowling
Great for rusted Fasteners
Size: 3/8- in
This thing works awesome busting loose rusty fasteners. Have some torx bits for 2001 Jeep Wrangler, with some patience haven’t broken a bolt yet. Easy to use, and seems durable. Good size for hammer surface without it being so small you hit your hand.
Reviewed in the United States on August 9, 2026 by Sean Ihle
The bane of "stuck screws" existence
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
Handy, use it all the time.
Size: 3/8- in
Handy tool...every tool box needs one for those stubborn screws that just don't wanna come out.
Reviewed in the United States on August 27, 2026 by james hundley