ITEM NAME:12pcs Durable Alloy M10 5mm Motor Shaft Coupler Sleeve Angle Grinder Connecting Description: Match The Motor Shaft Diameter: 5mm Motor Shaft Coupler Sleeve Saw Blade Connecting Rod Coupling Saw Chuck Adapter Triangle shape handle design cut the tightest drill not easy to shake and slip nut Fits for installed 16mm or 20mm aperture of the slice, polishing film, grinding and so on Suit for the polishing machine, good resistance to abrasion, long service life Specification: Material: Alloy Connected Rod Diameter: 8mm / 0.31in Connected Rod Length: 53mm / 2.09in M10-5mm Sleeve, Match Motor Shaft Diameter: 5mm Package Includes: 2 x Connecting Rod 4 x Splints 2 x Rod Key Connection 2 x Fixture Wrench 2 x Hexagonal Wrench Note: Please allow 1-3mm error due to manual measurement, make sure that you do not mind before you.Motor Shaft Coupler Sleeve Saw Blade Connecting Rod Coupling Saw Chuck Adapter. 2 x Connecting Rod. Material: Alloy. Suit for the polishing machine, good resistance to abrasion, long service life. 2 x Rod Key Connection.