This product is used to route wires through walls, attics, crawl spaces, subfloors and suspended ceilings Including 10 rods with threaded connection, flexible acrylic connection, brass push-pull rod, the diameter of the glass fiber rod is 4.0mm, Very suitable for installation. Flexible connection and splicing to the required length are made of high-quality glass fiber with excellent insulation size: Length: . 33cm / rod Diameter: about 4 mm Material:glass fiber colour:yellow Package Contents: 10 x rods with threaded connections 5 x Accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.