Musiclily Guitar Bass Schaller-Style Security Straplocks Strap Locks and Buttons for Electric Acoustic Guitar Replacement,Chrome (Pack of 2) Schaller style strap lock system, Ideal for guitar strap locking. Fast assembly and Quick and Easy release Easy to install, convenient to use;Color: Chrome They are not genuine Schaller strap lock system, also is not compatible with genuine ones. Package includes : 2 units Strap locks