Selfpiercing

A (outer Ø):  16mm B (neck height):  5,2mm C (inner Ø):  8,3mm Kgs/1000: 1,4kg …

A (outer Ø):  20,8mm B (neck height):  6mm C (inner Ø):  11,5mm Kgs/1000:  2,3kg …

A (outer Ø):  24,1mm B (neck height):  6,9mm C (inner Ø):  13,1mm Kgs/1000:  3,7kg …