1,DSLR support rods 2, carbon fiber rods 3, 3k sanded smooth surface 1) roll-wrapping ... to make sure the resin distribute evenly during curing in the oven. Roll-wrapping technique makes the multi-directional ... it can design the inner structure.2)Diversity in length, twist resistance.length in 50mm, 80mm, 100mm, 150mm, 200mm, 250mm, ... sanded to make sure the smooth movement. DSLR support rods