Description: High-grade welding, stable quality, high efficiency. Using for kinds of woodworking. Totally enclosed and lubricated . Carbide Tipped - Micro grain grade provides increased strength and utmost resistance. Made of high quality metarial, durable and stable. Specification: Material: Alloy Color: Black Shank Diameter: Approx. 6.35mm / 0.25inch Bearing Diameter: Approx. 25.4mm / 1inch Bearing Szie: Approx. 25mm / 0.98inch Overall Length: 76.0mm / 3inch Package Includes: 1 Piece of Woodworking Cutter Note: Please allow 1-3mm error due to hand test