Item Type: Standoff_x000D_Model: 3501-0006-0580_x000D_Material: Aluminum_x000D_Screw Hole: M4 x 0.7mm_x000D_Outer Diameter: Approx. 6mm / 0.2in_x000D_Length: Approx. 58mm / 2.3in_x000D_Application: Accessories in the field of robotics, supporting role, can be installed with idler wheels or bearings or as shafts. 1Both ends of these standoffs have standard M4 x 0.7mm female threads, which makes the parts more precise when fixing. 2Made of high?quality aluminum material, high strength and strong plasticity, not easy to wear after long?term use. 3Standoffs can be used to space to surfaces apart, to tie parts together for additional structural support, to mount an idler or a bearing or as a shaft. 4The total length of the pillar is 58mm, which extends the connection between the two workpieces, and the lengthened threaded connection will be more tight. 5The kit contains 4 aluminum standoffs for various connection and support operations for easy replacement.4 x Standoff