Specification Brand : HARFINGTON BulletPoint1 : Size - Teeth Type: 40 Teeth, Bore: 10mm, Width: 6.5mm, Height: 17mm, Outer Diameter: 27mm, Spanner: 2mm. 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 ItemName : HARFINGTON 2pcs 2GT Timing Pulley 40 Teeth 10mm Bore 27mm Dia. Aluminum Timing Belt Pulley with Hex Wrench for 6mm Width Belt 3D Printer CNC Machine Accessories, Silver Tone ItemPackageDimensions_Height : 10.9 centimeters ItemPackageDimensions_Length : 2 centimeters ItemPackageDimensions_Width : 6.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : timing-pulleys Manufacturer : HARFINGTON PartNumber : hta230708hh000037 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.