Carbon Fiber Round Tube 4mm x 2mm x 420mm for RC Airplane Quadcopter 8Pcs Centrifuge Tubes & Tube Boxes The tube needs to be

The tube needs to be inserted into the bottom of the joint to avoid the possibility of air leakage

Lead Length :  260mm / 10

Outer Dia : 25mm/1"

the holes should be equal to or a little smaller than the diameter shown

Shackle Width: 20mm (about 25/32")

Carbon Fiber Round Tube 4mm x 2mm x 420mm for RC Airplane Quadcopter 8Pcs Centrifuge Tubes & Tube Boxes The tube needs to beDescription: Size and Shape: pultrusion rounded tube with 4mm outside diameter, 2mm inner diameter, 420mm overall length. Pultrusion: pultruded tube means that all the fibers are in one direction, which makes it stronger than the woven tube in tension. Lightweight: strong as metal but only one fifth in weight, corrosion resistant, and heat resisting. Smooth Surface: made of high tensile and modulus unidirectional carbon fiber. Application: pultruded