Features: Alnico 5 Humbucker Pickups, These are deigned to duplicate that classic warm sound yet they have slightly more output to give you a bit more crunch for the punch. Scope of Application: This pickup compatible with for guitar and other electtric guitar humbucker pickup replacement. Resistance: 7.5K (neck) and 16.6K (bridge) Magnet: Alnico 5 Pole piece: adjustable screws Plastic bobbin and 4 conductor wires. Polepiece spacing: the neck is 50mm (1-31/32 inch), is 52.5mm (2-1/16 inch), mounting screw holes distance: 78mm (3-5/64 inch). Material: Metal colour: As shown Package Contents: 1 x guitar pickups set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.