This is a generic replacemnet parts ,works with Magic Bullet blenders 250w only. Model： MB 1001 MB 1001B MBR-1101 MBR-1701 This is good replacement gear for your old magic bullet machine This set can't fit nutribullet and nutribullet rx blender Package:3 gears for the Motor base and 3 Gears for under the blade. Blade is NOT included This is a generic product works with Original Magic Bullet blenders only. 3 pcs motor gear of blade base 3 pcs blade gear