[Material] Hard metal round wood carving tool holder, sharp and durable edge, enhanced heat-resistant PTFE coating, kickback protection and CNC balance. Radius sizes: 1/8in, 3/16in, 5/16in, 1/4in. [Design] 8mm round drill bit with round handle. High-quality alloy blade, making the blade sharper and more durable. The cutter head adopts the arc-shaped rolling design, which is more conducive to chip removal when used. [Features] Standard round cutter shanks are mainly used for edging and can also be used to form seams with different angles. With advanced spraying technology, these tools are both beautiful and corrosion-resistant, and have a longer service life. [Package Includes] 4 x 1/4 inch round handle. The cutting radius is 1/8 inch, 3/16 inch, 5/16 inch, 1/4 inch. Please pay attention to safety when using. [Applicable scenarios] Rounded shanks with bearing drills are widely used in the woodworking furniture industry and are suitable for the combination of wooden door frames, wooden