nozzle holder set with 4 injection nozzles Four injection nozzles (Nos. 1173 to 1176) mounted on one model board. Also a dismantled nozzle holder along with various nozzles, and an uncut nozzle holder. description ordernumber 1177 see also: balancing model for crankshafts crankshaft model case side-valve 4-stroke engine with timing wheel two-stroke moped engine