The angle grinder extension shaft can help you reach the narrow, tight or awkward place which normal grinder or polisher can not touch, It needs to be matched with various grinding heads, grinding wheels, grinding discs and so on. They are fit for all 5/8"-11 thread angle grinders and polishers. Package Including 3 inch(75mm) extension shaft * 1pc4 inch(100mm) extension shaft * 1pc5.5inch(140mm) extension shaft *1pcAdjustable spanner wrench *1pcFlange nuts * 3 sets Material & Combination Made of 45# steel with nickel plating workmanship. You can use the extension rods individually, or connect them freely to a special length as request Adjustable Spanner Wrench Made of carbon steel, the rubber-coated handle provides a comfortable grip and strong holding power, adjustable range from 0.6 to 2.1 inches. Flange Nuts Made of quality steel material, solid and durable.