Features:1) Engineers' cross pein hammer: 14mm, 16mm, 18mm, 20mm, 22mm,25mm 2) Engineers' ball pein hammer: 1 / 4lb, 1 / 2lb, 3 / 4lb, 1lb, 1 1 / 2lb, 2lb,2 1 / 2lb, 3lb3) Double faced smiths' hammer: 2 / 3 / 4 / 6 / 8 / 10 / 12 / 14 / 16 / 18/ 20lb4) Machinist's hammer: 20mm / 22mm / 25mm / 28mm / 30mm / 35mm / 40mm5) Claw hammer: 21mm / 23mm / 25mm / 27mm / 29mm, 8oz. / 16oz. / 24oz./ 28oz. / 32oz.6) Stone hammers: 0.8kg, 1kg, 1.25kg, 1.5kg, 2kg