【Description:】This combination is stable in use and has excellent performance.This connecting rod is a high-precision connecting rod.This drill chuck has a comfortable surface and is easy to clamp, so that the output torque becomes greater. The beautifully used surface concave-convex design enables the front and rear sleeves to effectively match and reduce shaking. 【Specification of the Drill Chuck :】Material: Main Material Metal,Drill Chuck Range : 1.5-10MM, shaft;Connection Size: 3/8-24UNF 【Specification of the Threaded Connecting Rod :】Inner diameter:8mm, The total length of the connecting rod is 42mm, The thread length is 15mm ,Thread specification 3/8-24UNF. 【Package Content:】1 x Connecting rod, 1 × Drill Chuck 【Application：】For milling machine, lathe, drilling machine, wood working machine.Should work with power drill. 【Please Note: 】 The drill chuck can NOT be used counterclockwise! Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid.