... PINSGrip length of shank:10mm~150mm or 1/2 inch~6inchDiameter of shank:3/16,1/4,5/16,3/8,7/16 ... ,1/2,9/16,5/8,3/4,7 ... /8,1(inch) or 5,6,8,10,12,14,16,20,22, ... steelMaterial of shank:stainless steel,Ally steel.carton steelBall qty:1,2,3,4 Release Pin BPI5-NM3 ...