Package: 3*extension shafts for angle grinders;3 sets of pressure plates. The length of the connecting rod is 60mm/2.36 ", and the external and internal threads are 10mm/0.39". Material: Made of high-quality thickened stainless steel material, durable, well crafted, practical and sturdy. Easy to install: There are grooves on the shaft for easy disassembly with a wrench. Suitable for 100 type angle grinder/polishing machine. Angle grinder extension link: By using an extension shaft, additional safety polishing can be provided in these areas without damaging details such as paint, lights, door handles, logos, internal console panels, etc. Purpose: The rotating extension shaft can be used for grinding and polishing deep stones with inner corners and special shapes. It can be used in conjunction with various grinding wheels, grinding heads, grinding discs, mold openers, etc., making it an ideal choice for solving narrow and awkward area problems.