12.mm
 Tin-plate angle piece, sharp corners | 12.mm1
 Tin-plate angle piece, rounded corners | 12.ni
 Angle piece, nickel-plated | 12.ni
 Angle bracket, nickel (renamed) |
12.ma
 Angle bracket, matt green (Mech Army) | 12.bs
 Angle bracket, black (Korean) | 12.ni
 Angle bracket, post-war (same as above) | 12.zn
 Angle bracket, zinc plated |
12.mb
 Angle bracket, matt brass plated | 12.bs1
 Angle bracket, blackened steel (Combat) | 12.ir
 Angle bracket, iridescent |