The LT A from Weller is a chisel soldering tip used with WP80, WSP80, MPR80, FE 75, TCP soldering irons. This tip also used with LR21, MLR 21 soldering irons with an adapter. Universal SMD & THT Applications Non-Cartridge Tips Effective heat transfer via silver core material Fast ramp up & recovery Low mass Tip thickness is 0.7mm Shape - Chisel Suitable For - WSP 80, WP 80