Features: brand new and high quality Brass material, iron spring, light and durable, low running sound, no loud noise Light weight, high strength, high rigidity, small friction factor. Wear resistance, corrosion resistance. Nut specifications: T-nut, pitch 2mm, lead 8mm, one rotation of the nut is 8mm; T-nut, pitch 2mm, lead 2mm, one turn of the nut is 2mm. pitch 2mm, lead 4mm, one rotation of the nut is 4mm Multi-functional: suitable for 3D printer T8 screw and DIY engraving machine Specifications: Item name: Anti Backlash Nuts Color: Yellow Nut Type: T-Nut Material: Brass Pitch: Approx 2mm Lead: Approx 8mm /4mm/ 2mm (Optional) Quantity: 1 Set Fit for : Ender 3 CR-10 / Tornado/Clone 3D Printer Parts Package Includes: 1PC x T8 Anti-Backlash Brass Nut note: This accessory does not contain a screw rod. The picture is for reference only. There might be little error of size for manual measurement. The colors deviation might differ due to different monitor settings, please kindly understand.