The crowning feature of this marver is the separate articulation ball joint. It allows the pad to be angled and moved to almost any position regardless of how the head is angled. It allows having a level marver pad on an angled torch head or anywhere in between. The innovative Crowley Marver uses a threaded connection point to securely attach the marver to the burner. The graphite pad is a premium quality EDM grade and is 4" wide x 2.5" deep x .5" thick. It's held in place by two strong grip spring clips.