Groz 24Pc Punch And Chisel Set Punches & Chisels Sets Double Union (BSP) 4 40 NC 6 32 NC 4 40 NC 6 32 NC 8 32 NC 10 24 NC 10 32 NF 12 24NC 1 8 27 NPT 1 4 20 NC 1 4 28 NF 5 16 18 NC 5 16 24 NF 3 8 16 NC 3 8 24 NF 7 16 14 NC 7 16 20 NF 1 2 13 NC 1 2 20 NF 14112 120Nm Impact Torsion Bar 1 2"Dr 201mmTorsion Extension Bars are for tightening only Shank is powder coated and the cutting edge is accurately ground Measurements =Blade Width X Overall Length Octagonal Cold Chisels 6mm x 125mm 8mm x 125mm 10mm x 140mm 13mm x 150mm 16mm x 163mm 19mm x 175mm 22mm x 190mm Centre Punches Heavy Duty 6mm x 150mm 2mm x 90mm 4mm x 125mm Pin Punches Heavy Duty 1