Utility Knife Replacement fixed blade knives Lightweight Box Opener Cutter $6.79 $5.59 Lot of 5 Utility Knife Replacement fixed blade knives Lightweight Opener Cutter $10.49 $8.69 Lot of 2 Utility Knife Replacement fixed blade knives Lightweight Opener Cutter $6.29 $5.19 2 pcs Carton Box Cutter Retractable Razor Blade Pocket Compact Utility Knife $6.19 $5.39 2 Pack - Carton Box Cutter Retractable Razor Blade Pocket Compact Utility Knife (2/Pack) - B111 $8.09 $7.09 Razors Blades Replacement Utility Knife Standard Refill 8 Per Pack - B115 $5.89 $5.19 Razors Blades Replacement Utility Knife Standard Refill 8 Per Pack - 2 Pack $6.89 $5.99 8 pcs Utility Knife Cutter Blades 7 sections 18mm Snap Off Razor Refill Blades $5.99 $5.29 10 pcs Utility Knife Replacement fixed blade knives Lightweight Opener Cutter $5.24 $4.34 Staniley Heavy-Duty Utility Knife Replacement Blades, Long lasting Blade Life 10-Count $9.59 $8.39