Double-acting magnetic reed switch pneumatic air cylinder with built-in magnet - IMI Bimba (Original line Magnetic reed switch (MRS) series) - 1-1/2" bore (B1-1/2") - 4" stroke (S4") - Front nose mounting - 7/16-20 UNF-2A (male) threaded rod + 1-14 UNS-2A threaded - 2 x 1/4" NPT threaded pneumatic ports - Stainless steel rod