The guitar pickguard mounting screw is mainly used to fix the pickup frame, ideal for most guitar and bass pickups. - Material: Metallic; Color: Black - Thread size: (D*L); M3 x 30mm/M3 x 30mm/1.18 inches; 11 x 2mm/0.43 x 0.08 inches; Spring size: 21 x 4.5mm/0.83 x 0.18 (D*L) - Pickguard mounting screw made of metallic material, durable, corrosion-resistant and non-rusting, also has the advantages of being lightweight and less brittle. - Easy to install and remove, mainly used to adjust the pickup height. - Align the screw with the pickup mounting hole, then place the spring on the screw and tighten the screw. - All the above sizes are measured manually, allowing for an error of +/- 0.1 inches.