SMC's CQS clean room, compact air cylinder has 4 bore sizes. Standard strokes range from 5 to 50mm. 10/11-C(D)QS series, available for clean environment, prevents particle generation in a clean room. 21/22-C(D)QS series offers the same structure as the clean series, and are for the environment in which the use of copper, fluorine and silicon are restricted. The 
10 6 3.5 1.5 (1) 6 3.5 22.5 9.5 27 11 11 9.5 0.5 24.5 7 5.5 3.5 (1) 7 5.5 ( ): Denotes the values of D-A93.
Clean Series: 10 (Relief Type), Magnet: D (Built-in), Bore Size: 20mm, Stroke: 10mm, Rod End Thread: Female, Auto Switch: A93--Reed, DC Volt, AC Volt, LED, Horizontal, Lead Wire or Prewired Connector: 0.5m (Or None in the Case of No Switch), Number: S (1 pc.)
Clean Series: 10 (Relief Type), Magnet: D (Built-in), Bore Size: 20mm, Stroke: 10mm, Rod End Thread: Female, Auto Switch: A93--Reed, DC Volt, AC Volt, LED, Horizontal, Lead Wire or Prewired Connector: L (3m)
Clean Series: Relief Type, Magnet: Built-in, Bore Size: 20mm, Stroke: 10mm, Rod End Thread: Female, Auto Switch: A93--Reed, DC Volt, AC Volt, LED, Horizontal, Lead Wire or Prewired Connector: 0.5m (Or None in the Case of No Switch), Number: 1 pc.