Yibuy Black 3-ply Dual Rail Pickup Electric Guitar Loaded Prewired Pickguard set SSS 9.2-9.3 kohm They are made of copper and plastic material. 3Ply Loaded Pickguard Set with dual rail pickup, fit for 11 hole electric guitar. A good replacement part for damaged one. Come with full set of knobs, switch, pickups and pre-wired circuit.