Search  for anything...

GapCap Tenor Saxophone end plug flex fits in your sax, expands to fit your case, vents air to dry the body tube, and shock absorbs impact like no other end cap

  • Based on 147 reviews
Condition: New
Checking for the best price...

Buy Now, Pay Later


As low as $11 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE refund/replacement until Jan 31, 2026

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.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, May 25
Order within 3 hours and 35 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: Tenor Saxophone


Features

  • Flex spring wall gives a perfect fit in any tenor saxophone. No more loose-fitting end plug or sax cap!
  • Extend it to safely hold the sax in a loose fitting case and protect the octave key.
  • Flex wall absorbs shock impact that can bend saxophone keys or body tube.
  • Vented at top and side for more air flow to dry the sax and leather pads after you play.
  • Replaces traditional saxophone end plugs or sax caps that trap moisture inside the sax.

Features

  • Flex spring wall gives a perfect fit in any tenor saxophone. No more loose-fitting end plug or sax cap!
  • Extend it to safely hold the sax in a loose fitting case and protect the octave key.
  • Flex wall absorbs shock impact that can bend saxophone keys or body tube.
  • Vented at top and side for more air flow to dry the sax and leather pads after you play.
  • Replaces traditional saxophone end plugs or sax caps that trap moisture inside the sax.

Item Weight: 1.25 ounces


Product Dimensions: 1.25 x 1.25 x 3.2 inches


Item model number: 751322


Is Discontinued By Manufacturer: No


Date First Available: November 19, 2019


Color Name: green


Material Type: Anti-Abrasive Polymer, Anodized Aluminum


Instrument Key: A


Size: Tenor Saxophone


Color: green


Brand: Key Leaves


Instrument Key: A


Style: Traditional


Item Weight: 1.25 Ounces


Item Weight: 1.25 ounces


Product Dimensions: 1.25 x 1.25 x 3.2 inches


Item model number: 751322


Is Discontinued By Manufacturer: No


Date First Available: November 19, 2019


Body Material: Brass


Color Name: green


Instrument Key: A


Size: Tenor Saxophone


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 25

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Good product. Great customer support experience.
Size: Alto Saxophone
This did not fit my 1957 6M with a double socket neck, although the KeyLeaves folks assured me it should have. My horn’s neck may have been modded at some point during its 67 years. The device fit every other alto I own as well as my Conn C Melody saxophones from the 20’s. So I ended up happy with the product, and my experience with KeyLeaves customer support was stellar. Recommended. ... show more
Reviewed in the United States on June 29, 2025 by Greysmoke Greysmoke

  • excelente
Size: Tenor Saxophone
buen producto
Reviewed in the United States on May 28, 2025 by Excelente producto

  • Important for Saxophone Care
Size: Alto Saxophone
This is a great product because when using a third party gig back sometimes the saxophone will move around in the bag causing leaks. This will keep the saxophone from moving, and prevent some trips to the shop. I have one in all my Alto and Tenor bags.
Reviewed in the United States on December 17, 2024 by SBDJr

  • It Works Well
Size: Tenor Saxophone
A bit pricey but it makes my Mark VI fit snuggly in its Protek case.
Reviewed in the United States on June 5, 2025 by DMW

  • Funciona perfecto
Size: Alto Saxophone
Funciona perfecto
Reviewed in the United States on May 9, 2025 by Adal

  • Great Fit
Size: Alto Saxophone
I had bought one of these Gap Caps for my tenor and decided to get one for my alto as well. The alto one really fills in the gap for my 1963 Buffet SDA in a Protec case. Great device.
Reviewed in the United States on December 12, 2024 by Amazon Customer Amazon Customer

  • Excellent
Size: Alto Saxophone
While expensive, these are terrific plugs. I love their universalness and the extending design that allows the use of multiple cases. This is a huge benefit for those of us who travel on planes and use different cases locally and for travel.
Reviewed in the United States on August 9, 2024 by Ed Calle

  • Great way to stabilize your horn during flights
Size: Alto Saxophone
Originally got this due to a suggestion from another friend who travels a lot with their horns. Since using this end cap, I have not needed to go to the repair shop for an adjustment after landing! Highly recommend this if you are traveling with your sax!
Reviewed in the United States on February 29, 2024 by Carolyn MacAdams

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...