Description: The Magic Bullet is designed to handle hard-to-chop foods, but after long periods of use, the motor in the base gear can wear out. This product is made to fit Magic Bullet blenders. Made of plastic, rubber, and metal. 4 replacement gears, 2 base gears, and 2 blade gears for your magic bullet. Features: Made of plastic, rubber, and metal material. This is a generic product made to fit Magic Bullet blenders. 4 replacement gears, 2 base gears, and 2 blade gears for your magic bullet. All base gears on the Magic bullet are reverse threaded. Tools needed for replacement: a screwdriver or wrench, a thick cloth, some oil for lubrication. Specification: Condition: New Color: Black & Transparent Material: Plastic, Rubber & Metal Diameter: Approx. 3~3.2cm/1.18~1.26inch Height: Approx. 1cm/0.39inch Weight: Approx. 34g For 250W Magic Bullet Juicer Package includes: 2 x Base Gear 2 x Rubber Gear Note: 1. Please allow 1-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.