American Hammer AM8CUFG Soft Face Sledge Hammer, Copper, 8 lb Head, 32 in, Fiberglass Handle G809112628 11M Flute Type Spiral Shank 11M Flute Type Spiral Shank Type Straight Left Right Hand Right Measurement System Fractional Inch Drill Style Jobber Drill Primary Material Application Aluminum Metal Pipe Fire Rating Up to 4 hr Standards UL Classified and FM Approved Material Intumescent Item Firestop Putty Application Method Putty Stick For Use On Electrical Conduit and Metal Pipe Penetrations Series MP+ Intumescent Yes Firestop Type Putty Stick STC Rating 56 Formulation Intumescent Market Commercial Usage Location Membrane Penetrations Handle Length 32 in Grip Material Fiberglass