Item Type: 4 String Pickup Set Material: Metal, Plastic Package List 2 x Bass Pickup 1 x Wired Bass Control Plate 1BASS PARTS: This kit includes 2pcs 4 string bass pickups and a wired bass control board, common replacement accessory for jazz bass instrument. 2NOISELESS PICKUP: 4 string bass pickup, noiseless design, which has convenient connection, stable and reliable performance, with strong practicality. 3EXCELLENT MATERIAL: Made of premium plastic and metal materials, these bass parts are durable, wear resistant, corrosion resistant and have a long service life. 4STANDARD CONNECTION: These bass pickups and wired control boards feature standard mounting holes and cables for easy installation and replacement. 5REPLACEMENT PARTS: Used to replace old or damaged bass pickups to ensure that the electric bass has good sound control and safe and stable operation.