Multifunction Brass Tool, steel plug and M3 screw for extractor press SISP21. NOT compatible with SISP20. The multifunction brass tool, depending on the operation to be performed, must be inserted in the main body with the plug downwards, in case of the extractor, or the pinion housing downwards, in case of the press. The pinion housing for this element were designed to house pinions with a diameter ranging from 5.5 mm to 7.5 mm without damaging them. The steel plug is locked into the brass tool by means of an M3 grub screw.