ITEM NAME:1Pcs M10 5 Mm Dc Motor Shaft Drill Adapter For Saw Blade Connection Couplin B5B5 1Pcs M10 5 Mm Dc Motor Shaft Drill Adapter For Saw Blade Connection Couplin B5B5 DIY Supplies: Electrical Model Number:Motor Shaft Adapter Flexibility of coupling shaft removes stress between the motor and driving components. colour:black Material:steel size:Match The Motor Shaft Diameter:5mm Match Saw Blade Inner Hole:10mm (M10) Package Contents: 1*Motor Shaft Coupling