uxcell Gold Tone Brass 3.17mm Motor Shaft 0.8-1.2mm Mini Electric Drill Chuck Product Name : Mini Electric Drill Chuck;Model : 3.17-1.2 Material : Brass;Fit Motor Shaft Dia : 3.17mm/ 1/8" Fit Drill Bit Dia : 0.8-1.2mm/ 0.03"-0.047";Color : Gold Tone Size : 8 x 27mm/ 0.3" x 1.06" (D*L);Weight : 9g Package : 1 x Mini Electric Drill Chuck