MaxLine Air Tubing System Master Kit 3/4" Line 300 FT M7580M7580 300' x 3 4" Air Line System Master Kit This listing is for a brand new 3 4" MaxLine compressed air piping 300ft System. This is an M7580 kit made by RAPIDAIR. The 300 Ft MaxLine kit is a great solution for a compressed air piping system designed for high demand air tool users and long airline runs in large shops or a commercial application. This kit includes 300ft of MaxLine 3 4" tubing, tubing cutter,(3) outlets (M7510), (2) tees (M8011), (1) 3