Overview: Stainless steel, non-stick tin. Use the needle into the components pins, heating with a soldering iron, slightly rotated to make the component pin & the circuit board copper foil completely separated. Set of eight sticks, the handle diameter are 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0 mm & so on. Specification: Weight Approx:38.2g Size Approx:9.5 x 7 x 1