Micro-Air Repairable, 1/2", 3/4" 1-1/8" bore Premair Composite Non-repairable 7/16" - 2" bore Silverair Stainless Steel Non-repairable 1/2" - 2-1/2" bore Economair 1-1/8" - 4" bore Provenair - Aluminum NFPA 1-1/2" - 10" bore Provenair - Stainless Steel NFPA 1-1/2" - 8" bore Premair Round Compact 1/2" - 4" bore Premair Square Compact 12mm - 100mm bore Air/ Oil Tanks 1-1/2" -4" Bore Rod Alignment Couplers