S Locks (Pair) Strap Locks / Security Locks Features • 3 pieces = 1 S-Lock • S-Locks are fully compatible with all existing Schaller Security Locks. • Only one strap and one pair of S-Locks for all your guitars. • All S-Locks come in a new and attractive re-usable crystal box. • Genuine Schaller, Made in Germany Strap button • Solid one-piece strap button in hardened steel with self-tapping wood thread. • Simply screw it on with an Allen key (size 3 mm). • 4 mm/ 5/32“ screw with self-tapping wood thread. • Fits all existing strap buttons incl. Gibson for perfect replacement without adjustments on existing holes and screws. • Hardened steel and more than double thickness of the strap button guarantees maximum security against breakage. • Including high-grade felt washers for ultimate protection of guitar's finish. Lock • Extended thread length for holding straps of up to 6 mm thickness. • New designed slanted locking bolt in stainless steel for permanent precision, reliable performance and wear-free finish. • New designed pull-up ball for easy-grip lock and release. Lock-Wheel • With unique 3-Step security function • Screw our lock wheel with patented self-locking thread tool-free by hand, you already protect your guitar sufficiently (the round shaping must be facing the pull-up ball!). • Use a 2 mm or 5/64’’ Allen key or screwdriver to tighten it for maximum security. • Use our micro cone-top screw to attach it permanently.