HG-501A is a master heavy duty industrial quality heat gun. It shrinks faster with a more powerful fan. It also lasts longer with a die cast aluminum housing and reinforced mica-insulated ceramic heating element. It is UL listed. The heat control has both high and low temperature settings of 500 & 750. The unit has a built-in stand that keeps the heat gun in a safe, upright position on any flat level surface for continuous use. The stand keeps both hands free for quicker shrink packaging. An air spreader, which is an optional tool used for broad heating, is also available.