Description: Made of plastic, rubber and metal. The item just fit for Magic Bullet (250W). Mixer Juicer cutter knife connecting shaft for Magic Bullet. All base gear in Magic bullet are reverse threaded. Features: ? ??Made of plastic, rubber and metal.  ? ? ??The item just fit for Magic Bullet (250W).  ? ? ??Mixer Juicer cutter knife connecting shaft for Magic Bullet. ? ? ??All base gear in Magic bullet are reverse threaded. ? ? ??Easy to install. The replacement of the juicer if your machine broken in home. ? ? ??Installation requires tools: a screw driver or wrench, a thick cloth. ? Specifications: Condition: New Color: Black and transparent ?Material: Plastic, rubber and metal ?Gear Base Size(D * H): Approx. 3.7 * 1.2cm / 1.46 * 0.47in Rubber Gear Size(D * H): Approx. 2.9 * 1cm / 1.14 * 0.39in ? Weight: Approx. 56g Package Includes: 2 x plastic gear bases 4 x rubber gears Note: 1. 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.