If you are trying to build a small drill this is the solution for it. this brass chuck helps to fit a drill bit into your motor. 
Specifications
						Diameter x Height
					
					
						8mm x 25mm
					
				
						Drill Bit
					
					
						2.5mm ~ 3.0mm
					
				
						Material
					
					
						Brass
					
				
						Package
					
					
						1 x Mini Drill Chuck 2.5mm to 3.0mm
1 x Hex Key
					
				
						Shaft Diameter
					
					
						2mm
					
				 
								 
								 
								 
							 
							