When I got home I check, mine has the pins that slide, tI was thinking of pins that worked with mask blades to set 35mm. The reason I use tape is the pins only mask horazontaly, by taping I can mask to just the right size. I recalled using the pins when I first got the Durst but found it a slow process for 35mm. I know that there is a glassless 35mm for the 601, seen a few over the years on ebay, just never bid on one.