Item Name: Lengthened Twist Drill Bits Material: High Speed Steel Specification: 2mm, 3mm, 3.5mm, 4mm, 5mm (Shank Diameter) Shank Type: Round Shank Size Details: 15cm x 0.5cm x 0.5cm/5.91" x 0.2" x 0.2" (Approx.) Description: Produced with the choice material, these twist drill bits have outstanding performance in hardness, abrasion resistance and sturdiness. Deep, neat and uniform spiral groove enables the twist drill bit to remove chips fast, which will not cause the accumulation of chips and can improve the working efficiency. These twist drill bits are made of high speed steel, which is sturdy and anti-corrosion. The length of this set is 15cm, the width and height of it are both 0.5cm. This set is suitable for woodworking, metals tapping and so on. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 5 x Twist Drill Bits (2mm, 3mm, 3.5mm, 4mm, 5mm)