Features:*Durable Construction - Made of high speed steel for durability & life.*Fast, Efficient, & Smooth Cutting - Precision ground teeth decrease vibration, cut fast, and cut clean.*Designed For Optimal Quick Chip Ejection - Optimized flute geometry allows chip expulsion from the hole when drilling.*Compatible Fit- Shank compatible with magnetic drill presses equipped with 3/4 in. shank.*Deep Cuts - Can be used to drill holes up to 1.37in. (35mm) deep. Specifications:Product Name: Annular CutterMaterial: HSSColor: SilverOptional Size: 12×30mm, 16×30mm, 19×30mm, 20×30mm, 23×30mm, 25×30mm, 30×30mm, 42×30mmHight: (Approx. ) 64mmSuitable for: Drilling holesQuantity: 1PcPackage Contents:1 x Annular CutterNote:1.Transition: 1cm=10mm=0.39inch.2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.3. Please allow slight manual measurement deviation for the data.