Option 1:1 piece of 10 Expander WheelOption 2:1 piece of 10 Expander Wheel + 10 pieces of Zurconia sanding belts ( P40 -3 pcs, P60 -3 pcs, P80 -2 pcs, P120 -2 pcs )Option 3:10 pieces of Zurconia sanding belts ( P40 -3 pcs, P60 -3 pcs, P80 -2 pcs, P120 -2 pcs )Outer Diameter:250mmWidth:50mmInner Hole:15.875mmExpander wheel on working, just for reference, ?Only the above-mentioned package contents, other products are not included.note:1. Please allow 1-3mm errors due to manual measurement. Make sure you don’t mind before triggering.2. The color may show different differences, please understand.