Magma Guitar Strap Locks and Buttons Security Quick Release Straplocks Strap Retainer System Nickel (2 Pieces Pack) (MSL-1S)Descriptions 1 Pair (2 strap locks) Nickel Guitar Strap Locks, connect positively to your strap and you can play your investment with confidence. Functions Premium guitar straplocks adapter to your guitar by replacing existing guitar strap pins screws with this special straplock system. Quick Release System These security guitar strap locks make it simple to put on and remove your strap simply pull out the straplock button and slide to release