Feature:1. The drill bit is forged with bearing steel, the overall heat treatment hardness is high, and the service life is long.2. U‑long chip flute designed is convenient for the discharge of wood chips and improves drilling efficiency.3. The force of the cutting edge of the drill bit is on a plane, which effectively protects against bursting at the beginning of use.4. Universal shank type, the drill tail adopts a circular designed, which makes the clamping more stable.5. Small size, easy to carry and store, convenient to use and with good performance.Specification:Item Type: Hole Drill Bits Material: Bearing steelModel: 6mm/6.4mm/8mm/9.5mmApplication: suitable for wood products such as MDF, MDF, particle board, wood, etc., suitable for hole drills, tenon machines Specification hole size Shank diameter Grooving depth Total length weight 6mm(Approx.) 6mm / 0.2in 4mm / 0.2in 45mm / 1.8in 175mm / 6.9in 120 g / 4.2 oz 6.4mm(Approx.) 6.4mm / 0.3in 4mm / 0.2in 45mm / 1.8in 175mm / 6.9in 120 g / 4.2 oz 8mm(Approx.) 8mm / 0.3in 5.5mm / 0.2in 60mm / 2.4in 195mm / 7.7in 160 g / 5.6 oz 9.5mm(Approx.) 9.5mm / 0.4in 6.5mm / 0.3in 60mm / 2.4in 195mm / 7.7in 170 g / 6 oz Package List:1 x 6mmSquare Hole Drill Bits1 x 6.4mmSquare Hole Drill Bits1 x 8mmSquare Hole Drill Bits1 x 9.5mmSquare Hole Drill Bits