THIS IS AN IMPROVED VERSION, IT HAS A REMOVABLE NOZZLE, UPDATED HEATING SYSTEM AND FINE PARTS FILTER. The most effective and convenient tool for Varroa management. The heating temperature of the instrument can be show degrees Celsius and Fahrenheit. Anhydrous oxalic acid is white crystal state. It is easy to sublimate because it will lose water of crystallization in dry air or heating. The initial sublimation temperature is 100 , it will sublimate at 125 , it will sublimate massive at 157 and start to decompose. The accurate temperature display allows beekeepers to add oxalic acid more accurately, so as to kill bee hive more effectively. It is used in the fumigation of beehives and thus with the evaporation of oxalic acid the bees are necessary treatment components. Noted : Does not include the gas cylinderor for the security reasons, but you can buy these in outdoor camping shop local. Appearance , but does not affect use Material: Metal,Plastic colour: Black Package Contents: 1 x Beekeeping tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.