Columbia's Cam Lock Tube is so simple and so positive , it's one of the best when it comes to fast set compounds. The brass cams easily find and lock to the stainless ring using the same technology as a firehose. Brass cams on a stainless steel lock ring Quick remove bottom for complete cleaning Hand made from U.S. aluminum and steel components Machined in Columbia's state of the art facility in Canada Available in: 24", 32", & 42" Columbia Cam Lock Compound Tube