Description 2.3mm Small electric drill clamp 2.3mm Small electric drill clamp motor shaft. The meaning of 2.3 mm (0.7-1.2) is the motor size is 2.3 mm, clamping drill of 0.7 mm to 1.2 mm. Description: Used for 2.3mm motor shaft. The meaning of 2.3 mm (0.7-1.4) is the motor size is 2.3 mm, clamping drill of 0.7 mm to 1.4 mm. Concentricity adjustment method: Before lock bit need to adjust the concentricity, otherwise there will be a violent vibration, power on rotate awhile on the smooth surface of the floor or glass, lock bit after bit concentric. Specifications Material: Brass Size: 25mm(L) x 8mm(Dia.) Diameter of backshaft (match the motor shaft): 2.3mm Range of the drill: 0.7mm-1.2mm; 1.0mm-1.5mm; 2.5mm-3.2mm; 1.6mm-2.3mm The money is for one piece. Please remark the size you want under the order or the size will send by random. Hoping for your understanding. Package Included: 1 x 2.3mm drill chuck
