Specification Brand : Yosoo BulletPoint1 : [ Aluminum Construction] Made of aluminum, strong and with surface oxidation treatment for anti- and anti- properties. BulletPoint2 : [Stable Structure] Synchronous wheel features a stable structure, excellent performance, and a long service life due to its design. BulletPoint3 : [Improves Belt Winding Capacity] Very useful in high-speed drives that require an enhancement in belt winding capacity. BulletPoint4 : [Multiple Applications] Widely used in 3d printers, milling machines, cnc engine lathes, and more for mechanical transmission purposes. BulletPoint5 : [ Aluminum Construction] Made of aluminum, strong and with surface oxidation treatment for anti- and anti- properties. ItemName : Yosoo 3pcs ALUMINUM SYNCHRONOUS WHEEL STEP TIMING PULLEY 20/60 TEETH P36 GT2 6 BF FOR 3D PRINTER PARTS ItemPackageDimensions_Height : 6 centimeters ItemPackageDimensions_Length : 9 centimeters ItemPackageDimensions_Width : 7 centimeters ItemTypeKeyword : timing-pulleys Manufacturer : Yosoo ModelName : Yosood20b5ac983 ModelNumber : Yosood20b5ac983 PartNumber : Yosood20b5ac983 ProductDescription : [ Aluminum Construction] Made of aluminum, strong and with surface oxidation treatment for anti- and anti- properties. [Stable Structure] Synchronous wheel features a stable structure, excellent performance, and a long service life due to its design. [Improves Belt Winding Capacity] Very useful in high-speed drives that require an enhancement in belt winding capacity. [Multiple Applications] Widely used in 3d printers, milling machines, cnc engine lathes, and more for mechanical transmission purposes. [Precise Sizing] Available in 20 and 60 teeth options, suitable for timing belts with a 6mm width and a hole diameter of 6.35mm.