Perforating Blades Assembly: Comes with the blade holder, perforation (dotted-line) wheel, and white rubber support wheel. Creates an easy tear line for coupons, tickets, reply , and forms. , Consistent Perf: Produces a clean micro-cut pattern so the page tears exactly where you want. Keep The Machine, Just Refresh The Blade: No need to buy a new creasing machine. This replacement assembly lets you restore performance and keep production going. Installation Overview: Blade Holder--Loosen the screws on the back side of the holder, swap in the new one. Blade--Loosen the black screw on the holder to release the old blade and insert the new blade. Support Wheel--Loosen the shaft screws on both side plates of the machine, pull out the shaft, and install the new support piece. Accessory Only: This is a replacement blade kit, not a full creasing machine. "Product Description This Perforation Blade Kit is a direct replacement head for most 18"" electric creasing machines. Over time, the perf wheel gets dull and starts leaving messy or uneven tear lines. This kit restores clean, controlled perforation without buying a new machine. What's included: Blade Holder*1; Perforating Blade*1; White *1. Universal installation method: Holder Replacement: Loosen the screws on the back side of the holder to install the new holder. Blade Replacement: Loosen the black screw on the holder, the worn blade, insert the new blade, and re-tighten. Support Replacement: Loosen the shaft screws from both machine side plates, pull out the shaft, slide off the old support wheel, slide on the new one, then reinstall the shaft and tighten. This is a replacement accessory, not the full electric creasing machine. " Color: As Shown Material: Metal Package Contents: 1 pcs * Electric Creasing Machine Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.