Hammer Tip, Material Nylon, Tip Hardness Hard, Diameter 1 1/2 in, Color Black, Thread Size 5/16, Mounting Threaded, Shape Round, Non-Marring Yes, Compatible with Brand Quick-Change Impax, Compatible with Grainger Part Number 4GGA4, 4GGA5, Compatible with Manufacturer Model Number 03357, 09554, Non-Sparking Yes