Allenair
½" to 5" bore, repairable brass-bodied roundline cylinders, 303 & 316 completely stainless steel cylinders, valve-in-head cylinders, air/oil cylinders, air clamps, & rotary index tables.

American
 5/16" to 2 ½" stainless steel, aluminum, and corrosion-resistant non-repairable cylinders; magnetic switches; Linear slide cylinders; & 1 ½" to 8" tie rod cylinders.

Duramaster
 1 ½" to 8" bore NFPA interchangeable tie rod cylinders for air.

Greenco
½" to 8" bore rodless cable cylinders, air-oil tanks, power-tubes.

Yates
1½" to 20" bore NFPA interchangeable heavy-duty air cylinders.