Separator: Spine Pillow/Urethane for Bookbinding Bulk Sale Spine pillows/separators for adjusting the binding thickness during bookbinding. Color: Gray *Color may vary depending on the lot. Quantity: 10mm: 59 pieces 5mm: 8 pieces Thickness: 10mm, 5mm Length: 297mm, Width: 25mm Hole Diameter: 4mm, 6 holes These are A4-sized, vertically oriented separators made of foamed urethane. Originally connected in sets of 10, they have been separated with the intention of use, but are unused. *Due to long-term locker storage and being separated, these are listed as "Near New" condition, although they are unused. *Please refrain from purchasing if you are sensitive to minor scratches or stains.