"Challenge" style spine clamp or book clamp for use on the guillotine paper cutter back gauge. These are sometimes referred to as Challenge book trimming guides (because this style was originally supplied with every new Challenge paper cutter), these spine clamps keep books and other stapled or stitched booklets flat for accurate and square cutting. They are very effective at assuring an even cut by holding down the spine of a book while it is pressed against the back gage.
The book clamps install on the paper cutter backgauge by tightening them to the back gauge ribs. They are made of cast bronze and are usually installed in pairs.
(These are equivalent to the original Challenge "Book Guide" part number 5-7-M361.)
For our "Economy Style" book clamps see our part number PPEC81.
PRICE IS PER PAIR. Add "1" to the shopping cart for 1 pair.
Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To complete your return, we require a receipt or proof of purchase.
Customized products and gift cards are exempt from being returned.
Heidelberg OEM Parts are subject to re Stocking fees.
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 30 days.
Late or missing refunds
- If you haven’t received a refund yet, first check your bank account again.
- Then contact your credit card company, it may take some time before your refund is officially posted.
- Next contact your bank. There is often some processing time before a refund is posted.
- If you’ve done all of this and you still have not received your refund yet, please contact us at