Heavy duty crush resistant shop vacuum/dust collection hose. External pvc coil, smooth interior. Flexible rubber. High quality hose. Does not contract when vac is on. Perfect for woodworking, woodturning. 2pcs at approx 17 feet each of 3" inside diameter (one with 4" adapter fittings) - $30 for hose w/o fittings, $40 for hose w/ fittings $60 for both