Features:* Soldering tips are suitable for soldering at lower temperature.* Type I: the soldering iron tip of the iron drill bit is small. It is suitable for precision welding or where the welding space is narrow, and the welding chip can also be improved.* Type B: the iron solder drill has no directionality, and the entire front end of the soldering iron can be soldered. Suitable for general soldering, no matter what size of solder joint, type B iron solder drill can also be used.* Type D: welding with tip part. It is suitable for soldering environments that require a large amount of tin, such as large soldering areas, thick clamps, and large solder inserts.* Type C: use the chamfered part of the front end of the soldering iron soldering iron drill bit, which is suitable for soldering that requires a large amount of tin. 3C type iron solder drill, suitable for soldering resistors, diodes and other components.* K type: use knife-shaped parts for welding, can use vertical or pull welding, this is a multifunctional iron soldering drill. Suitable for SOJ, PLCC, SOP, QFP, power supply, grounding components, correction soldering bridges, connectors and other welding.* Temperature range: 200-480°.* These soldering tips are suitable for 936, 937, 938, 969, 8586, 852D soldering stations. Specifications:Product Name: Soldering Iron Drill Material: Copper Color: Silver Type: 900M-TModel: K, I, B, 3C, 2.4D Length: (Approx.) 33mm Working Range: (Approx.) 14mm Inner Diameter: 4mm Outer Diameter: 6mm Suitable for: Welding, Fit for 936, 937, 938, 969, 8586, 852D Soldering Stations. Quantity: 10pcs/setPackage Contents:10 × Brazing Iron DrillNote:1. Transition: 1cm=10mm=0.39 inch.2. 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.3. Please allow slight manual measurement deviation for the data.