●FOR 55GAL DRUM - BEAMNOVA band heater is 5.7 feet long, suitable for most 55 gallons (208L) drums. Note: Only comes with the heater band. The drum is not included. ●FLEXIBLE SPRING - The spring can stretch up to about 3 inches. Easily attach the silicon band heater around various diameter pails to fix it tightly on the drum without falling down. ●WITH TEMPERATURE CONTROLLER - The heating temperature can be controlled by a thermostat range of 86 to 302 degrees F (30 to 150 degrees C). For plastic drums, it is recommended to keep the thermostat set below 100°F (37°C). ●STABLE CONNECTION - Made of high-quality material, the connector can hold the spring and will not deform when the temperature rises. ●WIDE APPLICATION - Keeps your drum warm and prevents it from freezing. Suitable for metal buckets, honey buckets, plastic pails, paint pails of plastic, and metal. Ideal for heating up WVO for settling or processing biodiesel.