General description The 37Pcs 3D Printer M4 Extruder Kit is designed for enhancing your 3D printing experience. This kit includes essential components for building or upgrading your extruder mechanism, ensuring efficient and quiet operation with a 4:1 gear reduction. Technical specifications Model: Voron Extruder Parts Kit Color: Silver Material: Metal Package Contents: 2 x Synchronous Wheels 2 x Extrusion Wheels 2 x Miniature Bearings 2 x Single Flange Bearings 5 x Brass Embedded Nuts 1 x 3mm Spindle 1 x 5mm Spindle 1 x Pneumatic Bowden Connector 1 x Screw 1 x Closed-loop Timing Belt 2 x Small Orange Buckles 1 x Spring with Washer Measurement allowed error: +/- 1-3 cm Other information Note: The color of the item may vary slightly due to lighting and display differences.