and high quality Model: 900M-T-I, B, K, 1.2D, 1.6D, 2.4D, 3.2D, 2C, 3C, 4C, a total of 10 pieces. Uses: This product is suitable for 936 soldering station, soldering station or all kinds of 900M series dedicated handle. Production of high-grade oxygen-free copper, solder joints of not less than 20000, Suitable for lead-free soldering, are high-end products, Heat transfer fast, , the tin, will not produce Weld, Head of the choice Should be with their own soldered dot Specific look at the size of solder joints Conventional welding head: I B K 3C 2.4D Color: silver material: metal Size: casing length: 65mm Package Contents: 1 x Iron casing 10 x iron tip Only the above package content, other products are not included. Note: Light 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.