The Schaller Guitar S-Lock features Schallers renowned dazzling quality in every aspect of its meticulous construction. They may be small but this pair will have a big impact on your performance. Featuring a newly designed slanted locking bolt high-grade felt washers and a lock-wheel with 3-step security function you can be sure your strap will be held firmly in place giving you extra peace of mind on stage. Better still the S-Lock promises a completely silent performance so you can focus on your immaculate sound free of any rattles. The 4mm screw with self-tapping wood thread is the perfect replacement for existing strap buttons even on Gibson guitars whilst an extended thread length on the lock accommodates straps of up to 6mm thickness.