Master Model from Poland specializes in turned brass aftermarket details. In recent releases, they have added small resin pieces and also small photo-etch parts making them be a multi-media aftermarket supplier.
This particular set is devoted to the 1/48 P-40 fans, which I know many of us are. The set provides you with PE sighting rings (4x), sighting bead, pitot tube and pitot tip (resin), .303 cal browning cooling jackets (x4) and blasting tubes (x2). The blasting tubes can be installed with either a straight edge or with a tapered edge at the business end of the tube.
The pitot tube tip shape and the shape of the cooling jacket make this set appropriate for the P-40B/C in British service.