Specification Brand : HARFINGTON BulletPoint1 : Size - Teeth Type: 20 Teeth, Bore: 3mm, Width: 6.5mm, Height: 8.5mm, Outer Diameter: 18mm BulletPoint2 : Material - The timing belt pulleys are made of Aluminum alloy, high hardness and high performance, silver oxide surface treatment, rust and corrosion resistance, and durability. BulletPoint3 : Features - With small friction and high-limit speed, 2GT pulleys are cost-effective and require little maintenance. Apply motor-grade bearings to make sure the pulleys work stably, smoothly and with a longer life. BulletPoint4 : Applications - The aluminum timing belt wheel is widely used in 3D printers, CNC, milling machines, gear forming machines, drilling machines, CNC machine tool lathes, or other mechanical transmission occasions. BulletPoint5 : Notice - Please confirm the size of aluminum timing belt idler pulley before choosing, Color : Silver Tone CompatibleDevices : Milling Machine ItemName : HARFINGTON 5pcs 2GT Idler Pulley 20 Teeth 3mm Bore 18mm Dia. Aluminum Timing Belt for 6mm Width Belt 3D Printer CNC Machine Accessories, Silver Tone ItemPackageDimensions_Height : 12 centimeters ItemPackageDimensions_Length : 2.4 centimeters ItemPackageDimensions_Width : 5.5 centimeters ItemPackageQuantity : 5 ItemTypeKeyword : timing-pulleys Manufacturer : HARFINGTON Material : Aluminum ModelNumber : a17042100ux1199 NumberOfItems : 1 PartNumber : hta230703hh000345 ProductDescription : The timing belt pulleys are made of Aluminum alloy, high hardness and high performance, silver oxide surface treatment, rust and corrosion resistance, and durability. Apply motor-grade bearings to make sure the pulleys work stably, smoothly and with a longer life. With small friction and high-limit speed, 2GT pulleys are cost-effective and require little maintenance. The aluminum timing belt wheel is widely used in 3D printers, CNC, milling machines, gear forming machines, drilling machines, CNC machine tool lathes, or other mechanical transmission occasions.