Feature: 1. The spindle bracket clamp is made of high-quality cast aluminum, which is strong and durable. 2. Suitable for various places, such as 3D printing, CNC engraving machine, etc. 3. This product is small and light, easy to install on for Dotbit engraving machine. 4. After wire drawing and anodized surface treatment, wear-resistant and rust-proof, have a long service life. 5. Complete tools, you can operate it yourself, suitable for DIY enthusiasts Specification: Item Type: Spindle Motor Mount Bracket ClampMaterial: Aluminum Model: CNC Spindle Fixture 71mm Applicable Models: For OpenBuilds LEAD CNC Specifications: Outer Diameter: Approx. 90 x 98mm / 3.5 x 3.9in Number: Approx. 71mm / 2.8in Thickness: Approx. 19mm / 0.7in Surface Treatment: Wire drawing and anodizing Colour: Black Include: (1) Router shaft installation (4) 90 degree angle connector (4) Thin M5 8mm (4) Thin M5 10mm (4) 3-way nut on M5 (2) Thin M5 25mmSize: Approx.20.0mm / 0.8in 40.0mm / 1.6in 10.0mm / 0.4in24.4mm / 1in 10.3mm / 0.4in 90.8mm / 3.6in 14.4mm / 0.6in 85.1mm / 3.4in 5.0mm / 0.2in 71.0mm / 2.8in 21.8mm / 0.9in 8.5mm / 0.3in 47.3mm / 1.9in 6.0mm / 0.2in 20.6mm / 0.8in 12.0mm / 0.47in 1.5mm / 0.06in 1.0mm / 0.04in. Package List: 2 x Router Shaft4 x Connector10 x Screw4 x Nut