Rectangular Punches for Bergeon 6620 This rectangular punch is available in 2 mm, 4 mm and 6 mm and fits the Bergeon 6620 strap cutting (notching) plier. This is a replacement cutter for item # 64-6620. When used, this cutter creates a 2 mm, 4mm, or 6 mm rectangular cut in a leather watch band. This cutter fits in the top of the plier, and is held in place with a fixation screw. Sold individually.