Fender 3/8 x 3/8 x 3-1/2 Inches Pickup Shielding Material for Electric Guitar, Rubber Package of two pieces of 3/8 x 3/8 medium-density adhesive open cell foam Used for pickup height adjustment on most Precision Bass, Jazz Bass, Jazz master, and Jaguar pickups manufactured and used by Fender from 1989-Present Affordable genuine Fender replacement parts for your guitar or bass