Check the listing for details. 4PCS Smoothing Pneumatic Chisel Air Hammer Bits Tool Set 10mm Shrank with Spring. Condition: New. Listed at 19.94 USD. 4 Pcs Air Hammer Bits Accessories 0.401'' (10mm) Shank Features The chisel air hammer bits set are made of premium alloy steel for maximum durability and long-lasting performance Ideal for tire repair, windpipe pressure seam edge, crushing hard rock, and more - this air hammer accessories are perfect for any job This air hammer bits set is compatible with air rivet hammers, 150mm, 190mm, 250mm gun air hammers, and gas shovels - making it a versatile addition to your toolbox Featuring an oval-shaped and flat head surface, our pneumatic chisel air hammer bits set is perfect for forming metal plates, rivets, and knockouts with ease Specifications Material: alloy steel Type: hammer bits Sizes: Oval-shaped Air Hammer bit: 176 * 25mm (6.93 * 0.98 inch) 2 Pcs Flat Head Air Hammer bits: 100 * 30mm (4.0* 1.18 inch); 80 * 35mm (3.14 * 1.37 inch) Spring: 28* 26mm (1.10* 1.02 inch) Package Includes 3x Hammer bits 1x Spring