How to use: 1.Press the plung down; 2.Heat up the solder till melted; 3.Place the nozzle of the solder sucker next to the liquid and press the release button; 4.If failed to remove the tin in one time,repeat it again. Package includes: 1 x HANDSKIT Desoldering Pump 1 x Extension Nozzle Description Size of HANDSKIT solder sucker:Whole Length:12.8 inc;Spring Length:5.3 inch; Length of Extention Nozzle:0.98 inch. Long enough sprin provides powerful suction for you to remove tin in one time. 1 extention suction nozzle to deal with complicated soldering and protect desoldering pump. Easily handle and use for both beginners and professional no matter with left hand or right hand.