Cheap And Discounts TOUGHBUILT TB-H4S30-80/TB-H4S-5/TB-H4N-5 30-pack Utility Knife Blades Cowhorn Blades Trapezoidal Blades Wholesale. Buy Directly From Merchant STANLEY Master Pro Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.