Milwaukee® extensions feature the largest knurling surface, offering the most control. The knurling on the female drive end helps when hand-tightening or working with oily materials. Additionally, select extensions have knurling on the shaft for more control. Chrome plating offers corrosion and rust protection. All Milwaukee® Mechanics Hand Tools are backed by a lifetime guarantee.
				 
				
						
								
									
Largest Knurling Surface - Precision Control
								 
								
									
Easy to Read Size Identification
								 
								
									
Knurling on Female End Helps When Hand Tightening