B.A.S.H® Unbreakable™ Handle Sledge Hammer, 4 lb Head, 16 in Ergonomic Handle ORS NASCO and steel working parts hardened and steel working parts hardened in a 1 [Nom] 4 1 2 in Grit 60 Hardness Grade T Hazmat NO Jan San Catalog NO Prop 65 YES Quantity 25 per carton Quarterly Flier NO Special Order NO Speed [Max] 13300 RPM Stock Status In Stock Thickness [Nom] 0 Unbreakable™ Technology—steel core eliminates breaking during overstrikes Safety Plate—secures head to handle preventing head dislodging Ergonomic Handle—shaped and thickened for improved comfort and less vibration Non Slip Grip—vulcanized rubber handle for secure grip while striking Lanyard Hole—safely secure hammer to wrist or stationary object