ITEM NAME:Electric Guitar Cavity Covers Back Plate 155mm + 3 Ply Truss Rod Cover Description: - Guitar pickguard cavity cover back plate. - 3ply construction and 3-hole type truss rod cover. - Easy to install. - Suit for Electric Guitar Bass. - Great replacement parts for guitar. Size Chart: Back Plate Size: Approx.155.2 x 86mm/6.11 x 3.4 inch Truss Rod Cover Approx. (T x H x W)2 x 49.5 x 28mm/ 0.07 x 1.94 x 1.1inch Package Included: 1 Piece Guitar Cavity Cover 1 Piece Truss Rod Cover.3ply construction and 3-hole type truss rod cover. Truss Rod Cover Approx. 1 Piece Truss Rod Cover. - Guitar pickguard cavity cover back plate. 1 Piece Guitar Cavity Cover. - Suit for Electric Guitar Bass.