Estwing Hammer 577g / 20oz SKU: 245143 MODEL: E-MRF20C Error. try again later You've successfully joined the club $ 21 .98 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants This Sure Strike 20oz. Curve claw hammer has a forged solid steel head and has a fully polished face. The jacketed fiberglass handle provides overstrike protection. Features and benefits Jacketed fiberglass handle. Injection molded grip.