"RATED CAPACITY(CU.IN.)50;PSIG 1800;KPA 12,400;LENGTH(IN.)12.625;DIAMETER(IN.)2.50;WEIGHT(POUNDS MAX)2.00;NECK THREAD 3/8-18 ANPT;NON-SHATTERABLE SPUN SEAMLESS STEEL AND RATED FOR PRESSURE OF 1800 OR 2100 PSIG;CYLINDERS ARE TYPE A WITH INTERNAL TAPER PIPE THREAD IN THE NECK;A THREADED CAP IS USED TO SEAL THE NECK OF THE CYLINDERS"