Shown below are the distances from the edge of the trimmed sheets to the inside edge of the punched holes and thumb cutouts for use when laying down printing impositions.

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WIRE-O 3:1
With standard thumb cutout for calendars, also double hook available.
(up to 610mm binding edge)
6mm PLASTIC/METAL SPIRAL
(up to 610mm binding edge)
WIRE-O 3:1
With Euro thumb cutout for calendars.
(up to 610mm binding edge)
3:1 PLASTIC SPIRAL
(up to 610mm binding edge)
WIRE-O 3:1
For books up to 10mm in bulk.
(up to 610mm binding edge)
5mm METAL SPIRAL
For books up to 15mm in bulk.
(up to 610mm binding edge)
WIRE-O 2:1
For books between 10mm and 30mm maximum bulk.
(up to 610mm binding edge)
PLASTIC COMB
(up to 395mm binding edge)