Item Type : Extrusion Wheel Model Number : Extrusion Wheel 40 Teeth MK7/MK 8 Name:40 tooth Mk7 / Mk eight Brass Planetary Gear Wheel Size:5mm*11mm*11mm Material: Brass Teeth of the wheel:40 teeth 26Teeth compatible for anet makerbot or 1.75mm consumables three-D printer 40T complicable for CR-10 sequence 3D printers or another similar printers Packaging List: 10pc gears