10 PCS 900M-T-4C Big C Type Lead-free Electric Welding Soldering Iron Tips, For 900M-T-4C Model:For 900M-T-4C 40HQ: 1259 cartons * 80

40HQ: 1259 cartons * 80 pcs = 100720 pcs

Material: ABS+TPU+aluminum alloy

Noise Resistant: High-density shielding for strong noise resistance

for ES330

10 PCS 900M-T-4C Big C Type Lead-free Electric Welding Soldering Iron Tips, For 900M-T-4C Model:For 900M-T-4C 40HQ: 1259 cartons * 80Use and maintenance of iron head: 1. The soldering iron head is the heat conducting part of the welding table. It mainly consists of four metal materials: copper, iron, nickel, chromium and tin. Copper, as a heat conductor, is the main component of the soldering iron head. About 85% of the soldering iron head materials, copper has good thermal conductivity, which is conducive to the rapid heating of the soldering iron head. Good soldering iron heads