- Tubing Tubing LLDPE John Guest Part Number Description Case Qty. PE08-BI0500F-B John Guest Blue PE Tubing 1/4" 500 Ft. 1 PE08-BI0500F-E John Guest Black PE Tubing 1/4" 500 Ft. 1 PE08-BI0500F-G John Guest Green PE Tubing 1/4" 500 Ft. 1 PE08-BI0500F-N John Guest Natural PE Tubing 1/4" 500 Ft. 1 PE08...