Stanley fatmax avx curve claw and rip claw hammers stanley 1 51 212 the stanley fatmax antivibe avx rip claw hammer has a one piece solid forged curved claw head for a larger sweet spot and better balance the patented tuning fork design plus 24 torque stabilising bars help to reduce shock and vibration travelling up the arm li this claw hammer has a magnetic nail starter for hands free use and a new soft grip which reduces fatigue and allows for multiple holding positions li weight 570g