Hakko T18-D12 soldering station replacement tip for models: FX888D-23BY, FX888-23BY, 936-12, 926-12. Solder tip shape 1.2D, chisel/screwdriver style tip. Type: Replacement tip for FX888D-23BY/926/936 Size/Dimensions: Chisel tip 1.2mm Application: For fine to medium work