ITEM NAME:2x Arbor Mandrel Adapter Set M10 5mm 6mm Sleeve Saw Blade Coupling Saw Chuck Description: 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 Match The Motor Shaft Diameter: 5mm and 6mm 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 M10-6mm sleeve, Match Motor Shaft Diameter: 6mm Quantity: 1x M10-5mm, 1x M10-6mm, 2Pcs in total. Package Includes: 2 x Connecting Rods 4 x Splints 2 x Rod Key Connections 2 x Fixture Wrenches 2 x Hexagonal Wrenches Note: Please allow 1-2mm 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. Fits for installed 16mm or 20mm aperture of the slice, polishing film, grinding and so on. Triangle shape handle design cut the tightest drill not easy to shake and slip nut.