Primary Sources, Historical Collections: China, with a Foreword by T. S. Wentworth

Scimaker 24 Pack Utility Knife, 25mm Retractable Box Cutter | Smooth Cardboard Cutter, Heavy Duty Knives with Sharp Snap off Razor Blade, Perfect for Office and Home use

25mm Heavy Duty Utility Knife,10pcs SK5 Snap-Off Blades,Retractable Lock Box Cutter with Anti-Slip Rubber Grip for Office DIY

25MM Heavy Duty Utility Knife, 2-In-1 Safety Box Cutter Retractable, 2 pcs | Razor Knife Exacto Craft Knives, with 4 extra Utility Sharp Snap Off Blades for office, home, heavy-duty use

50-Pack 25MM Utility Knife Blades, Snap off Knife Blades for Retractable Box Cutters and Knife, SK5 Blades in Bulk Pack. 10pc ×5c

HAUTMEC 20PCS 25mm SK2H Ultra Sharp Snap Off Blades, Professional Retractable Utility Knife Replacement Blades 2 PACK, Creative Safety Box, for Industrial or Construction Applications HT0082-20PC

HAUTMEC 25mm Extra Heavy-Duty Utility Knife, Multi-Purpose Snap-off Box Cutter, Ratchet-lock Mechanism, Reinforced Fiberglass Handle HT0250-KN

Box Cutter Retractable 25MM Long Utility Knife With 10pcs Blades Refills | Heavy Duty Exacto Knife Razor Knife Utility, Snap Off Blades Box Cutter with Rubber Grip for Cardboard, Boxes, DIY Crafts

OLFA 25mm Extra Heavy-Duty Utility Knife (H-1) - Anti-Slip Rubber Inset | 25mm Japanese tool steel snap-off, anti-slip rubber inset, ratchet-lock - Heavy cutting - Contractors and Construction