This is a replacement soldering tip for Hakko FX-888 soldering iron. This is a conical type of soldering tip. Replacing the tip is very easy - simply unscrew the shield, slip the replacement tip in, and screw the shield back on. TOL-10721
500-3C soldering tip, round, 3 mm in diameter, for soldering stations, eg Zhaoxin 950, QUICK 203G, YiHua WEP 950.