Hakko T18-D08 soldering station replacement tip for models: FX888D-23BY, FX888-23BY, 936-12, 926-12. Solder tip shape 0.8D chisel tip 0.8mm. Type: Replacement tip for FX888D-23BY/926/936 Size/Dimensions: Chisel tip 0.8mm Application: For fine work work