Description: Designed with the universal shank that is round and straight, this router bit has high compatibility with the various drills, and it is easy to install. Adopting premium material and special treatment, this router has high hardness and excellent abrasion resistance, and with the neat spiral groove, it will not cause the accumulation of chips when working. These router bits are mainly made of hard alloy, which is sturdy and firm. The length of this set is 5.5cm, the width is 5.2cm and the height is 0.8cm. This set is suitable for wood drilling, tapping and so on. Item Name: Milling Router Set Material: Hard Alloy Specification: 3.175mm Single-edge Router, 2mm Single-edge Router, 3.175mm Ball Dual-edge Router Shank Type: Round, Straight Handle Diameter: 3.175mm (1/8inch) Size Details: Storage Box Size: 5.5cm x 5.2cm x 0.8cm/2.17" x 2.05" x 0.31" (Approx.) Length: 38.5mm/1.52" (Approx.) Notes: Due to the light and screen setting difference, the product's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 4 x Single-edge Routers (3.175mm) 4 x Single-edge Routers (2mm) 4 x Ball Dual-edge Routers (3.175mm)