This tips is not T12 tip or SH72 tip,only can work for 01/T65/T85/GVDA GD300/RGS65 staiton,can not work for T12 station from some Customer feedback, the tin in the tip, this is not a stain . The soldering iron tip has been tested at 200 by the manufacturer to that the soldering iron tip is good working before shipping. The temperature of 200 will dissolve the tin of the soldering iron tip.If you mind, please do not buy. This is the /T65/T85/GVDA GD300/RGS65 soldering iron replacement tip with B2 - -K65 -- BC3 it adopts unique structure design which is shorter than the traditional T12 tip or SH72 tip make sure the heating speed much faster. Model: B2 - -K65- -BC3 Soldering Iron Tip Replacement Heater Solder Bit Chisel Head B2 - -K65- -BC3 for , T65, T85, GVDA, GD300, RGS65 Internal Heating Type Lead Free Soldering Iron station Not T12 tip or SH72 tip Please read the before order! The tip is a customized replace product, no /T65/T85/GVDA GD300/RGS65 logo, but quality is the same and it can works perfect with your /T65/T85/GVDA GD300/RGS65 soldering iron, if you mind, please don't buy it. The tip are customized product, not produced by or GVDA! Colour:As Shown Material:Metal Package Contents: 5 x Iron Tip Only the above package content, other products are not included. Note: Light reflection 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.