The Schaller S-Lock Strap Locks are engineered to give players the ultimate in safety, silence, and security. Crafted from hardened steel with a unique one-piece strap button design, these locks ensure your instrument stays exactly where it belongs — on your shoulder. Whether you’re performing on stage or tracking in the studio, S-Locks eliminate the rattles and risks of traditional strap locks, letting you play with complete confidence. With their triple-security architecture, ergonomic operation, and versatile fit for straps up to 6mm thick, Schaller S-Locks redefine reliability. The patented Lock-Wheel design makes installation simple yet secure, while high-grade felt washers protect your instrument’s finish. Precision-built in Germany, these locks are trusted by players worldwide for their durability, silent operation, and uncompromising performance. Features Secure strap lock system engineered for maximum safety and silence One-piece hardened steel strap buttons with maximum grip thread design Fits straps up to 6mm thick with ergonomic, stainless-steel locking bolt Patented Lock-Wheel system with triple safety concept for unmatched reliability Includes felt washers to protect your instrument’s finish Specs Strap button material Hardened steel, one-piece construction Strap button installation 3mm (1/8") Allen key Thread size M (4mm wood thread, optional sizes S: 3.5mm, L: 4.5mm) Strap compatibility Up to 6mm thickness Strap hole size 10mm Locking bolt Stainless steel, slanted design Lock-Wheel 3-stage safety system with hand-tighten, 2-hole torque mount, and grub screw lock Washers High-grade felt Noise Silent operation, no rattle Tools required 3mm Allen key (button), 2mm Allen key or screwdriver (Lock-Wheel), 2.5 x 5mm set screw driver for grub screw
