Description Schaller S Lock Buttons Ruthenium New and unique one-piece development, easy to install with a 3mm Allen key. Specially turned 4mm thread for maximum grip in the wood including Gibson(TM) instruments without adjustments to the wood or the screw. Hardest steel for maximum freedom from wear and safety. Includes high-quality felt washers to protect your instrument. 1 pair of Schaller S-Lock buttons Color: Ruthenium With screw M (standard). Thread 4mm Length 22mm.
