Packaging content: 1 x Rougher Bar, 1 x Copper Hoop, 1 x Wrench S15 Rougher Carbide Lathe Tool Size: Overall length: 10" (250mm), Joint Diameter: 0.472" (12mm); Indexable Carbide Inserts Blades Design: 15x15x2.5mm-R150 Square tungsten carbide tip has 4 sharp edges of R150 radius. Once one side is blunted, you can rotate the carbide blade to get a new, sharper edge. You can find matching carbide tipped insert (S15-R150 ) in Dirtech's Amazon store Shaft for Stability: The roughing tool bar is made of stainless steel CNC, which is durable and hard. Square shaft for stability while turning (won’t twist) than round shaft tools, making it easy to keep tools flat on the tool rest. The stable shaft reduces the risks in the use process, so that each customer can obtain good woodworking cutting results in safe operation Sharp and Durable: 15mm-R150 square tungsten carbide insert blades are made by raw tungsten carbide, which is resistant to wear and corrosion, can stay sharp for a long time. The carbide cutters can cut through hardwood with ease. Carbide lathe tool tip cuts thru hard maple like butter. Great for roughing out Reduce Scratches: The R150 radius cutting edge of square carbide insert reduces the risk of the blade scratching the wood and getting stuck in the wood during turning Woodturning lathe tool handles: You can find handles in kinds of colors at Dirtech's store Packaging Content: 1 x Rougher Bar without tip,1 x 15mm-R150 Square Carbide Insert, 1 x Screw, 1 x Copper Hoop, 1 x Wrench of T20, Manufacturer: Dirtech