Material: The Base Gear Clutch is made of Plastic which is extremely sturdy and has a metal inner core. The Blade Gear is made of a Vulcanized Rubber that is extra hard and sturdy that does not deteriorate easilly, with a strong metal core. Easy to Use: Replace your broken or damaged Base Gear and/or Blade Gear with these replacement parts. You do not need a Technician to do it. See images on the left of instructions. Compatibility: These Base Gears and Blade Gears are compatible with the Magic Bullet MB1001 Blender. Please Note: Not Compatible with any Nutribullet, Magic Bullet Mini or Baby Bullet. Set Contains: 2 x Base Gear fits the motor base for Magic Bullet MB1001 - 250Watt, 2 x Blade Gear for under the Blade for Magic Bullet MB1001 - 250Watt. Product provided by MMOBIEL - We always try our best to exceed your expectations at every turn. Join the ever growing list of satisfied customers and discover the difference with MMOBIEL.