Compatible with Metabo/Hitachi NR65AK / NR65AK(S) / NV75AG / NR65AK2(S) / NR65AK2M / NR65AK2SM / NV75A5M 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