"GAGE,PEAKING;INWARD/OUTWARD AXIAL WELD OUTER COMBUSTION CHAMBER CASE,CONSISTING OF 1 BAR,MATL AISI 1018,4.00 IN. LG,1.00 IN. HIGH,0.375 IN. THICK;2 RODS,MATL AISI 01,1.625 IN. LG.,1 THREADED ROD 2.00 IN. LG.,8-32 THREAD FULL LENGTH;3 BALLS,MATL CARBIDE;2 HEXAGON NUT,MATL STEEL;1 WASHER MATL AISI 1018"