General purpose, transparent tube, made from food-grade material. Suitable for a wide range of applications including: low pressure delivery, syphon and drainage lines, builders water level, cable or chain protection, fish tank tube, water level sight tube, protective covers. Bulk spools and coils provide a simple and convenient system for retailing `cut to length` CVT. Handy metre marks and the tube diameter are printed every metre along the full length of the tube. The metre mark counts down to show how much tube is left on the spool.