Electronic Tank Heat Blanket for Butane, Propane, and BHO Extraction, etc.

Mastercool 98250 Electronic Tank Heater Blanket 110V Accessory is designed to
speed up A/C charging time. The Mastercool 98250 ensures total discharge from
30 and 50 pound refrigerant tanks, uses a 300W heating element, and is a great
accessory to all Mastercool refrigerant scales.