Drilling and cutting orbicular stock can be very because it is not cushy to hold or center. The Center-It Jig all of that. The hardy aluminum formed block is 5 '' drawn-out, 4 '' and 1-3/4 '' flooding which allows you to drill and cut almost any size dowel, pipe, or tube. The base four slots so you can easily mount the jig to your drill press or workbench while the after-school edges of the `` V '' are well-grooved to make controlling the jig very cushy during hand held applications.