Features:* * Made of material, more .* Replaceable iron drill bit for Hakko 936 station, for 900M.933.376.907.913.951,898D,852D +* Lead-free paints environmentally friendly soldering iron drill, high temperature resistance, more suitable for high melting point lead-free soldering* Maintenance tips:1: try to use low temperature solderingHigh temperature will accelerate the oxidation of the tip and will reduce the life of the tip. If the tip temperature is above 470 ° C, its oxidation rate is twice that of 380 ° C.2: do not apply too much pressureWhen welding, do not apply too much pressure, otherwise the tip will be damaged and deformed. As long as the tip can fully the solder joint, heat can be transferred. Also, choose the right tip to help with heat transfer.3: always keep the can on the iron headThis can reduce the oxidation risk of soldering iron drill and make the cast iron soldering head more . After use, add new solder after slightly reducing the soldering temperature of the iron drill, so that the tinning layer has a better anti-oxidation effect.4: keep the tip clean and clean the oxide immediatelyIf there is black oxide iron drill on the soldering, the iron solder drill may not be tinned. During this time, it should be cleaned immediately. During cleaning, the first time adjusting the temperature of the soldering iron drill to about 250 °C, then clean the soldering iron drill bit with a sponge to clean and then on. Tin. Repeat the operation until the oxide is purified.5: choose a low-activity fluxHighly active or corrosive jets accelerate the corrosion of the soldering iron when heated, so low-corrosion jets should be used. Specifications:* Color: Black (As pictures show)* Material: Metal * Model:900M-T-I, 900M-T-K, 900M-T-B, 900M-T-3C,900M-T-2.4D * Diameter: 5mm (Approx.) Package Contents:5 * Soldering Tips1 * Holder AdapterNote: The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness