Pop-Up Drum Gauge, 36 OD x 127 mm H, Polyethylene, Vertical, Manual Closure, 19 mm NPS/NPT, For Use With 0.75" Bung
Vertical Drum Polyethylene Pop-up Gauge is a low cost solution to overfilling drums during waste disposal operations. When drum is almost full, indicator "pops-up" to warn you.