[EASY TO INSTALL]- the diameter of internal and external threads is 10mm, and the total length of the angle grinder extension shaft is 80mm and the actual extension length is 60mm.Notched for easy removal with a wrench, fits Model 100 Angle Grinders/Polishers. [YOU GET]- 4 angle grinder extender and 8 lock nut,so you can pick up the suitable one as you need, or besides, these polisher extensions can be interconnected with each other, so you can get a longer shaft by connecting them. [HIGH QUALITY]- Our angle grinder extension connecting rods with high hardness iron,more stronger and .10mm diameter makes the rotary speed constant and steady,effectively avoid the needless vibration in the polishing work! [GREAT for SMALL AREAS]- with our rotary extension shaft set, you can polish the corners where the large polisher cannot get, safe for car and machine!never need to be upset upon the awkward spaces or narrow areas hard to reach anymore! [MULTI-FUNCTION]- This adapter turns your angle grinder from a simple hand tool into a multi-functional extended version grinding machine tool. You can cut drywall, wood, metal, plastic, deburring, polishing, rust removal, and waxing. Colour:silver Material:iron Package Contents: 4 x angle grinder extender 8 x lock nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.