Features 1、Made of high-carbon steel of special heat-treatment, these bits have high hardness. 2、Bits are equipped with long sanks and have a small hole drilled through the flat part. 3、Spade bits have flattened blades with a sharp point that helps position and steady these bits. 4、Total six boring bits in one set that you can use to bore holes of different sizes. 5、Widely used on bench drill or electric hand drills for woodworking boring holes. Specification Features: Made of high-carbon steel of special heat-treatment, these bits have high hardness. Bits are equipped with long sanks and have a small hole drilled through the flat part. Spade bits have flattened blades with a sharp point that helps position and steady these bits. Total six boring bits in one set that you can use to bore holes of different sizes. Widely used on bench drill or electric hand drills for woodworking boring holes. Specification: Material: High-carbon steel Hardness: HRC55-HRC60 Color: Silver Boring Diameter: 10mm/12mm/16mm/18mm/20mm/25mm Hex Shank Size: 6mm Length: 150mm/5.9in Quantity: 6pcs Weight: Approx. 244g/8.6oz Package list: 6 * Spade Bits Package List