B-321-O-MR Fabco Pancake series Pneumatic cylinder

Fabco B-321-O-MR Single-acting (spring-retract) pneumatic cylinder actuator with single rod -(Pancake original series) - 2" (B2") bore - 1/2" (S1/2") stroke - 1/2-20 UNF-2A male threaded rod-end - 1/8" NPT threaded pneumatic port - rated for -25...+250°F / -31...+121°C ambient - round cylindrical shape - clear anodized Aluminium body / hard Chrome-plated stainless steel piston rod / standard Buna-N seals - through-hole mounting - rated for 4psi...250psi