MODEL NUMBER:Base gear replacement compatible with MB1001 (120V,Max 250W,60HZ) GOOD REPLACEMENT:This is non-original aftermarket part, It is made exactly fit for EASY TO INSTALL: 1. Take a towel, with a towel wrap blade with his left hand holding.2. holding the connecting shaft, connecting shaft rotate clockwise to fall.3. When installing counter clockwise to tighten. Material:plastic colour:Black + transparent Package Contents: 2 * plastic gears for the Motor base 4 * rubber gears Only the above package content, other products are not included. Note: Light 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.