SHEFFIELD 10pcs Snap-off Spare Cutter blade refill 18mm Paper Cut SK5 Mata Pisau Tolak Tukar 美工刀替换刀片Razor-Sharp tempered SK5 bladeUniversal fit for all 18mm snap-off knivesPRODUCT SPECIFICATION:ITEM NO: S067118BLADE MATERIAL: HIGH CARBON STEEL SK5SIZE OF BLADE: 18mmTHICKNESS: 0.5mm1 PACK = 10 PCS OF BLADES Show More Show Less