The Gundlach 532 Cove Base Groover allows an installer to quickly and easily gouge the back of a piece of cove base to make clean and professional outside corners. Uses a 5/32" blade that can be replaced or sharpened. Cove Base Groover is used to gouge the back of cove base to make wrapping outside corners cleaner and easier. Simple adjust the blade depth for the cove base and create the groove. This tool eliminates the need for costly preformed corners by allowing you to create corners on the fly!