Features 2Pcs Belt Wheel: Including a 2GT 20T belt wheel without top flange, and a 2GT 16T belt wheel, increasing torsion and motor strength. The Accessories: Comes with various accessories, such as hardened steel extrusion gear, hand twist nut, needle roller bearing, etc. Easy to Install: Designed to have a light weight and a compact size as well, the installation is very convenient to finish in minutes. Great in Effect: Equipped with these accessories, you will find the filament not likely to slip, and stable printing has good effect. Extensive Using: Widely compatible with for Voron 2.4 3D printer, for Ender3, for Ender3 pro, for Ender3 V2, for Ender 3 Max and more. Specification: 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 Wheel2 x Hardened Steel Extrusion Gear1 x Hand Twist Nut2 x Needle Roller Bearing2 x F625 2RS Bearing5 x Brass Insert Nut1pc Φ3 x 20mm Shaft1pc Φ5 x 50mm Shaft1 x Pneumatic Fitting2 x Pneumatic Connector Snap12 x Screw1 x Closed Loop Timing Belt1 x Spring2 x Metal Washer1 x Storage Box 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 Φ3 x 20mm Shaft 1pc Φ5 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