Set 4 Đầu Kẹp Mũi Khoan 0.3-4mm Với Chìa Khóa 3.17mm

100% brand new and high quality Features: High precision screw thread and tapered hole. Strong impact resistance. Compatible with impact dril and different power electric drill. Specifications: Color: As Picture Material: High-Carbon Steel Outer Diameter: 21.5mm Taper: 2 Degrees 49 Minutes 24.7 Seconds Work With 0.3mm-4mm( 0.01" - 0.16") Drill, The Maximum Clamping: 4.2mm. Connection Size: JT0 (Inner Hole Diameter Is 6mm) JT0 Taper The Biggest End Of Diameter: 6.350mm JT0 Taper The Smallest End Of Diameter: 5.800mm 3.17mm Brass Mini Electric Motor Shaft Clamp Drill Chuck For 0.3mm-4mm Drill. Drill Clamp JT0 Connection Rod Connect Motor Drill For 3.17mm Motor Shaft. 3.17mm Shaft Coupling Motor Connector BRASS. Close-Fitting With 3.17mm Motor Shaft Copper Rod For 0.3~4mm JT0 Dirll Clamp Material: Brass Match The Motor Shaft Diameter: 3.17mm. Quantity: 1 Set Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1pc x Drill Chuck 1pc x spanner / key 1pc x 3.17mm Shaft Connecting Rod