HIGH QUALITY MATERIAL: The rotary polisher extension kit is carefully made of high hardness stainless steel and advanced finishing technology. The stainless steel extension kit provides greater safety at high speeds when using angle grinders with grinding accessories. Rust and corrosion resistant, very durable and long lasting. Package Contents: 3 x Carbon Steel Angle Grinder Extension Rods. Total Length: 75mm/100mm/140mm, to meet different length needs, with notch to fit all M14 thread polishers. Precision Thread: The rotating extension shaft is notched for easy removal using M14 metric screws and comes with a matching wrench for all M14 thread polishers. Perfect Tool for Polishing Tight Areas: Extra clearance can be created by using an extension shaft, each polisher's extension link easily screws on without tools to reach tight or awkward corners like round mirrors, safety guards, etc. Use it to reach corners that larger polishers can't reach. Wide Application: Using an extension shaft allows for deep grinding and drilling. It can be used for grinding and polishing deep stones such as inner edges and special shapes. It should be used in conjunction with various grinding heads, grinding wheels, grinding wheels, mold openers, etc. Product features: 1. Precision thread ensures stable installation and high concentricity. The grinding process is smooth and without clearance. For local gaps that cannot be eliminated from the edge of an angle grinder or polisher, install an extension rod and grind and polish in one step. 2. Universal and easy to install for car enthusiasts and beauticians. 3. The thread of the extension rod is M14 and is suitable for most angle grinders on the market. Product specifications: Material: carbon steel Color: Silver Size: 75mm, 100mm, 140mm Thread specification: M14 Scope of delivery: 3pcs angle grinder extension rod