Specifications: Type: Tightening rod Material: iron Full length: 75/100/140mm Screw: M14 Threaded hole: 14mm Back padding: 80 mm diameter, 14 mm threaded hole 100 mm diameter, 14 mm threaded hole 125 mm diameter threaded hole 14 mm Package list: 3x Extension rod Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Durable Material: Made of high quality iron with good craftsmanship, the surface is smooth to ensure its durability and practicality. Full length: 75/100/140mm, Threaded hole: 14mm Easy to Install: The notch is easy to remove with a wrench, easy to install, suitable for 100 type angle grinder/polisher. Great for Small Areas: Install the extension rod, and complete the grinding and polishing in one step. By using an extended shaft, additional clearance can be provided to safely polish these areas without the risk of hitting/damaging the paint. details such as lights, door handles, emblems, interior console panels, and more. Widely Usage:The rotating extension shaft can be used for grinding and polishing deeper stones such as inside corners and special shapes. It needs to be used with various grinding heads, grinding wheels, grinding discs, grinding discs, mold openers, etc.