Hakko T18-CF4 soldering station replacement tip for models: FX888D-23BY, FX888-23BY, 936-12, 926-12. Solder tip shape, 4C, cut surface, pre-tinned. Type: Replacement tip for FX888D-23BY/926/936 Size/Dimensions: Special tapered tip, 4.0mm sharp beveled at the front Application: For medium to large work