standard of ball lock pin:

Grip length of shank:10mm~150mm or 1/2 inch~6inch

Diameter 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 5mm~25mm

Material of handle:stainless steel,Ally steel.carton steel

Material of shank:stainless steel,Ally steel.carton steel

Ball qty:1,2,3,4