8 ounce per stroke 316 Stainless Steel piston pump comes with a 2-5/8" pail adapter for use on pull out spout containers as well as a 2" NPT standard bung adapter. This pump is ideal for 5 & 6 gallon containers and has wetted parts of 316 S.S. and PTFE. Overall length is 25" with the handle down and 42.5" in the max pumping position. 1/2" od spout and 1-1/8" od body. Shipping weight is 3lbs. This pump is lockable with the addition of the lock kit. other optional items the 1-3/4" female metal pail adapter is available.