Specification Brand : POLISI3D BulletPoint1 : they are made from aluminum, good CNC drilling, blue surface treatment, looks delicate BulletPoint2 : The latest version of the Y axis can cover the entire aluminum profile end, more stable than the previous generation version of the aluminum profile coverage problem, the use of better materials, we ship 2pcs synchronous wheel inner sleeve which allows to use the original machine synchronous wheel, adjust the belt more stable and firm. BulletPoint3 : Used with 6mm belt, upgrade the tension tensicner to adjust the belt freedom, much better, very practical BulletPoint4 : It includes two assembled tensioner kit (1set X axis tensioner + 1set Y axis tensioner), you can need to install them easily onto your printer by yourself BulletPoint5 : Please know this kit is only Compatible with Sidewinder X1 X2 SW-x1 SW-X2 3D Printer Color : Black ExternallyAssignedProductIdentifier : 4851237135869 ExternallyAssignedProductIdentifier1 : 0764481225665 ExternallyAssignedProductIdentifier2 : 764481225665 GpsrSafetyAttestation : 1 IncludedComponents : 3D Printer Accessories ItemName : Upgrade Adjustable X Y axis synchronous Belt Stretch Straighten tensioner Kit v2 Version Compatible with Sidewinder X1 X2 SW-x1 3D Printer (Tensioner) ItemPackageDimensions_Height : 15.2146 centimeters ItemPackageDimensions_Length : 4.0132 centimeters ItemPackageDimensions_Width : 10.3124 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : 3d-printer-accessories Manufacturer : POLISI3D Material : Aluminum ModelNumber : SW X1 parts NumberOfBoxes : 1 NumberOfItems : 2 PartNumber : SW X1 parts ProductDescription : ENOMAKER Upgrade Metal Ender 3 Z Axis Stepper Motor Mount Bracket Fixed Plate CNC Aluminum Mounting Base L Block for Ender 3/Pro/V2/S1/S1 Pro, Ender 5/Pro, CR-10S, CR-10 V2/V3, CR10S Pro 3D Printer Package Included 1 x Motor bracket 2 x Allen wrench 1 set Screws