Made with a HIGH QUALITY and DURABLE plastic to last Fits Magic Bullet Juicer Blender models: MB1001, MB-1001, MBR-2501, MBR2501, MB1001C, MB-1001C, 1001C, MB1001B, MB-1001B, 1001B, 1001, 7712, 101, 2501 Package includes 1 (one) motor base gear replacement. Dimensions: 1.3 inches (diameter) x 0.4 inches (heigh). Base Gear Replacement Part Compatible with Magic Bullet 250W Blenders MB1001. Package includes 1 (one) motor base gear replacement. Dimensions: 1.3 inches (diameter) x 0.4 inches (height). Compatible with Magic Bullet MB1001 Blenders ONLY. Directions: To remove your broken piece, use a flat screwdriver at the bottom center of the power base and turn the gear on top clockwise with a vise grip and protective cloth. You have to put a lot of strength into it. It's going to be a bit tough to turn. NOT COMPATIBLE with Nutri Ninja, NutriBullet, or Baby Bullet blenders.