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, long life, easy on the tin, will not produce Weld, Head of the choice Should be selected 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 shooting 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.