1221T-8-B 1221T-8-N 1221T-8-PH 1221T-8-S 1221T-8-S-12 1221T-8-SS 12-21TGC/TR8 12-21UBC/C430/TR8 12-21UBC/C430/TR8/S370 12-21UBC/C470/TR8