Item Type: 3D Printer Extruder Accessory Kit Applicable Models: Compatible with for Voron 2.4 3D printer, for Ender3, for Ender3 pro, for Ender3 V2, for Ender 3 Max, for Ender5 pro, for CR10-V2, for CR-10S pro, for CR-10MINI, for CR-10S5. Package List 2 x Synchronous Wheel 2 x Hardened Steel Extrusion Gear 1 x Hand Twist Nut 2 x Needle Roller Bearing 2 x F625 2RS Bearing 5 x Brass Insert Nut 1pc 3 x 20mm Shaft 1pc 5 x 50mm Shaft 1 x Pneumatic Fitting 2 x Pneumatic Connector Snap 12 x Screw 1 x Closed Loop Timing Belt 1 x Spring 2 x Metal Washer 1 x Storage Box 12Pcs Belt Wheel: Including a 2GT 20T belt wheel without top flange, and a 2GT 16T belt wheel, increasing torsion and motor strength. 2The Accessories: Comes with various accessories, such as hardened steel extrusion gear, hand twist nut, needle roller bearing, etc. 3Extensive Using: Widely compatible with for Voron 2.4 3D printer, for Ender3, for Ender3 pro, for Ender3 V2, for Ender 3 Max and more. 4Great in Effect: Equipped with these accessories, you will find the filament not likely to slip, and stable printing has good effect. 5Easy to Install: Designed to have a light weight and a compact size as well, the installation is very convenient to finish in minutes.