Cheap And Discounts 10 Pcs K-nife Blade 19mm Width SK5 Metal Utility K-nife Blades For Home School HandCraft Paper Box Cutting Trapezoid Blade Wholesale. Buy Directly From Merchant Spring idea Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.