VERSATILE ROOFING HAMMER: Hammer features a 3 hole gauge for measuring 4-1/2", 5", and 14.3 cm (U.S. standard and metric shingle measurements), a blade for trimming roofing felt and asphalt shingles, and a nail slot. ONE PIECE, SOLID STEEL CONSTRUCTION: For strength and durability. DROP FORGED: Drop-forged steel with polished, milled face and cutting edge. VIBRATION CUSHIONED: Vibration from the hammer is absorbed through the shaft into co-molded contoured rubber handle. SPECIFICATIONS: Cutting Edge: 1-7/8", Length: 13".