Clamp Tube Center Clamp Support M4 X 0.7mm for DIY Robot Feature:1. Optional Bore Diameters: Various bore diameter options, which can be combined with different shafts, motors, aluminum tubes, and bearings.2. Clamping method: the parts are clamped by clamp, which will not damage the fixed parts.3. M4 x 0.7mm: Each 1 side 2 post mount has a threaded hole of M4 x 0.7mm on the bottom surface of the two pillars.4. Screw fitting: when installing various shafts, motors, aluminum tubes and bearings, they can be clamped and fixed with screws.5. For DIY Robot: the distance from the bottom two pillars to the center of the hole is 24mm / 0.94in, suitable for DIY robots in the "Accessories" section. Specification:Item Type: Fastening SupportMaterial: Aluminum Surface Treatment: Surface Anodic OxidationThread Model: M4Packing List:2 x Fastening SupportNote:Please adjust the right size before use. 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't check out immediately after the auction ends, please wait a few minutes and try again, payments should be completed within 3 days. About Shipping 1.