Compatible with Metabo/Hitachi, NV45AB2 NV45AB2 /NV45AB2(S) / NV45AE / NV50A1 / NV50AP2 / N5008A1 / NH451 / NT50A / NV45AA / NV45AB Manufactured from durable PU material for resistance, performance and durability. Designed to prevent damage to the driver and pistons Protects nail guns by absorbing piston driver firing shocks Specifications: PU Material