Feature: 1. Crooked Head Eccentric Drill: Innovative design of crooked head drill is suitable for all kinds of drilling situations, which can effectively reduce the construction cost and improve the quality of construction. 2. Carbide Material: The use of carbide to build the eccentric drill bit not only ensures precise positioning, but also reduces wear and prolongs the service life and improves tool performance. 3. Drill Bit Specifications: 4-Piece drill bit set is provided, containing 4 different sizes: 6 mm, 8 mm, 10 mm, 12 mm, to meet a variety of practical application requirements. 4. Non-Slip 6.35mm Hex Shank: The 6.35mm hex shank ensures easy and secure compatibility with most common drill bits, electric drills, hand drills, and bench drills. 5. Wide Application Range: Suitable for glass, ceramic, tiles, mirrors, flower pots, wood, porcelain, brick walls, and more. Maintain a vertical drilling position and use a continuous flow of cooling water to keep the drill bit cool. Specification: Specifications: Color: Blue Material: Tungsten Carbide Shank Diameter: 6.35mm Size: 6mm, 8mm, 10mm, 12mm 6mm Length: 90mm, 8mm Length: 90mm, 10mm Length: 98mm, 12mm Length: 98mm Item Weight: 103g / 3.63oz Package Weight: 120g / 4.23oz Package Size: 11 * 4 * 2cm / 4.33 * 1.57 * 0.78in . Package List: 4 * Drill Bits