The Flex Lock blocks are compatible with the vast majority of standard guitar and bass strap-buttons from major manufacturers. Flex Lock Strap Blocks - Secure your strap without drilling or replacing parts.
D'Addario Flex Lock Strap Blocks - Set of 4 - Secure Guitar Strap Solution
Daddario Polypro Guitar Strap with Leather Ends, Black
Guitar Strap Button Felt Washer Lock Strap Block Guitar Black Gasket,Pack of 20
1 Set Accordion Bellows Closing Straps, PU Accordion Lock Strap with 4
