Hot rail dual blade humbucker pickup, compatible with electric guitar which can be installed humbucker pickup. Suitable for ST/SQ electricguitar circuit modification. Pickup humbucker; output line: one 4 cores cable can be switched to single. Wiring: Four-core wire + ground wire, can be cut single, black main wire/red and white cut single wire/green silver grounding. The humbukcer pickup come with screws and springs, easy to install. Colour:Yellow Material:Plastic+Metal Package Contents: 1 * Guitar Pickup 2 * Screw 2 * Spring 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.