Specifications: Made of high-quality carbon steel, it has high hardness and is durable to use. It is suitable for all kinds of milling machine processing machinery. Extension rod diameter and the other parts are precision ground to eliminate unbalance and increase safety when cutting. Type: Milling Tool Handle Material: Carbon Steel Applicable Collet: ER32 Specification: 02: MTB2-ER32-M10, 03: MTB3-ER32-M12, 04: MTB4-ER32-M16 Features: Durable, Wear-resistant, Collet Chuck Holder Size: 11.5cm x 5cm/4.53" x 1.97", 13.5cm x 5cm/5.31" x 1.97", 15.5cm x 5cm/6.10" x 1.97" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Milling Tool Connecting Rod 1 x ER Wrench