Features: Engineered with serrated tension washers and corrosions resistant metal, these GT302 guitar jacks lock washers provide vibrations resistant fastening for stable instrument connection during intense performances. The precisions stamped stainless steel construction features teeth that generate rotational resistance, ideal for securing guitar bridge plates, output jacks, and tuning machine hardware. Essential for tourings musicians, luthiers, and guitar technicians requiring stable fasteners for stage ready instruments and workshop repairs. Perfect for stabilizing floating tremolo systems during aggressive string bending or maintaining pickup selector switches in humid rehearsal environments. Ensures consistent grip force across all 10 washers while the polished silver finish complements professional grade guitar hardware upgrades. Specifications: Component: Metal Size: As Picture Shows Package Includes: 10x Tooth Lock Washers note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.