Klein's Hole Saw Arbor with Adapter can be used with Klein hole saws 1-3/8-Inch to 6-3/8-Inch (35 to 162 mm). Fits all 3/8-Inch drills and larger. 31906 ARBOR 3/8" THREADED WITH PINS
For use with Klein hole saws 1-3/8-Inch to 6-3/8-Inch (35 mm to 162 mm)Pins lock the saw to prevent over-tightening