0054443699 LT 1S 0.2 mm Straight Conical Soldering Iron Tip for use with WP 80. Weller’s range of LT soldering tips are designed to be used with Weller’s MLR 80, WSP 80, MPR 80 range of soldering irons. The LT series offers a range of tip shapes and sizes including chisel, conical and hoof as well as both straight and bent variants.