Tin Soldering Iron Tip Type: Lead-free soldering iron tip; Material: Oxygen-free copper; Size: Outer diameter 6mm, Inner diameter 4.5mm. 2pcs set of 6 different shapes of soldering iron tips: 900M-TB, 900M-TI, 900M-TK, 900M-T-SK, 900M-T-2.4D, 900M-T-3C (6pcs per set, 12pcs in total)). The precision ground copper tip is plated with iron, nickel and chromium. 900M soldering iron tips are designed to last up to 40,000 soldering cycles. Easy to use, the copper base heats up quickly, has good tin suspension ability and is not easy to oxidize. Suitable for soldering iron stations 936, 937, 938, 969, 900M, 8586, 852D.