[Good for installing cables through straight piples]For installing cables, passing cables through straight piples [Non-rusting, non-magnetic]Guide rod set made of fiberglass cable; non-rusting, non-magnetic. [Contains 10 rods with threaded connections]4 mm flexible acrylic connection, push and pull rods. Comes with plastic storage case. [Flexible to connect]Can be used individually or together for the length. Colour: yellow Material: glass fiber Size: length about 33cm, diameter about 4mm Package Contents: 10 x threaded rods with 1 x flexible extender 1 x traction auxiliary line 1 x hook end pull 1 x eye end for pushing 2 x accessory screw sets 1 x plastic storage box 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.