The Grainger liquid level gauges for drums and tanks are designed for use in 68-inch deep containers. They feature polypropylene and stainless steel construction with a variety of connection types including flange, thread and weld. The gauges allow visual monitoring of liquid levels, with clear tube designs that resist chemicals. They are available in lengths up to 60 inches to accommodate tall containers. The gauges can withstand temperatures up to 200°F and pressures up to 100 PSI. Overall, these are durable, chemical-resistant liquid level gauges well-suited for monitoring fluid levels in large, 68-inch deep drums and tanks in industrial settings.