Clippard invites competitive comparisons! If you are an OEM that uses air cylinders, Clippard will provide a FREE sample for your evaluation. Clippard's pneumatic cylinders feature polished I.D 304 stainless steel tubes for low friction. Available in 12 bore sizes with strokes to 40". Clippard invites competitive comparisons! If you are an OEM that uses air cylinders, Clippard will provide a FREE sample for your evaluation. Clippard's pneumatic cylinders feature polished I.D 304 stainless steel tubes for low friction. Available in 12 bore sizes with strokes to 40".