Donut 30lb, Black Welded type 

DT-30-BK-4H
Donut w/Inner Bladder, 30 lbs Capacity
- 16" round corrugated hose(AW-02+PI-01)
- 500psi Inflation Hose(BH-07-60CM)
- 1 x 2" Wide Over Pressure Valve Welded type(OPRV-02)