OSBORNE K-14 Arch Punch Set Ideal for punching clean, specifically sized holes in canvas, sails, upholstery, leather, and other similar materials. Osborne arch punches are drop forged in one piece from the finest special carbon steel. Larger sizes are made with our properly engineered two piece welded construction. A unique feature of the Osborne arch punch is that the cutting hole tapers back from the cutting edge so that each punching clears freely and requires only a light blow with a hammer or mallet to cut with ease. Fully polished barrel with hardened cutting edge. The cutting edge is fully hardened all the way through and properly finished to provide long use trouble free punching. Offered in a wide assortment of sizes. These punches should be used on an Osborne No. 603 Cutting Pad. Osborne wooden mallet 89.5- 3 1/2 Included. Steel hammers are not recommended. Sizes - 1/4, 3/8, 1/2, 5/8, 3/4, 7/8 & 1 Made in America.