IDEAL Hex Arbour for Bi-Metal Hole Saws from 9/16" to 1-3/16", Model 36-571*
Durable solid steel construction provides years of long life performance that will not deflect under pressure of drilling. With a hybrid flat hex set screw in the body, it provides a tight fit to withstand vibration but provides ease of replacement of set screw with use of common flat head screwdriver.
3/8 in. Hex Arbor for 9/16 in. - 1-3/16 in.