Stanley FatMax AVX Rip Claw Hammer 450g (16oz) STA151532 FatMax AntiVibe AVX rip claw hammers have 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.It has a magnetic nail starter for hands free use and a new soft grip which reduces fatigue and allows for multiple holding positions.FatMax AVX Rip Claw Hammer 450g (16oz) STA151532