Function: 1. These tips are made of oxygen-free copper, easy to tinn and diamagnetic, suitable for soldering at lower temperatures 2. This set includes a total of 10 types of soldering tips, and you can choose the right one for different soldering needs 3. Do not leave the iron on for hours if you do not use it. This may cause the tip to be coated with black oxide 4. Try tinning the tip when it heats up. If you leave it on for too long or run it too hot, it will burn solder and turn black 5. These soldering tips are suitable for 936, 937, 938, 969, 8586, 852D soldering stations Specification: Description: Copper soldering tips are suitable for soldering at lower temperatures. This set includes 10 types of solder tips, and you can choose the right one for different soldering needs,for example, the b-shape universal, which can be used from any direction and is easy to hold in any position,solderable any surface from small to large;a shape type k has the shape of a knife and allows soldering by applying the tip in 3 ways:linearly, frontally and pointwise, it is used for soldering narrow graduations,correction of bridging and drag soldering. Get this set of tips and make soldering easier. Characteristics: These tips are made of oxygen-free copper, easy to tinn and diamagnetic, suitable for soldering at lower temperatures. This set includes a total of 10 types of solder tips, and you can choose the right one for different soldering needs. Do not leave the iron on for hours if you do not use it. This can cause the tip to be covered with black oxide. Try tinning the tip when it heats up. If you leave it on for too long or run it too hot, it will burn the solder and turn black. These soldering tips are suitable for 936, 937, 938, 969, 8586, 852D soldering stations. Technical data: Material: oxygen-free copper Surface Finishing: Galvanization (Iron and Nickel) Length: approx. mm / 1.65" Outside diameter: 6mm/0.23" Inner diameter: 4mm/0.15" Temperature range: 200 480 Shape: I, SI, B, K, 1.2D, 2.4D, 3.2D, 2C, 3C, 4C Quantity: 1 piece (total of 10 pcs. ) Suitable for: soldering station 936, 937, 938, 969, 8586, 852D The package includes: 10pcs x Soldering Tips