For your consideration, is your choice of a NICHOLSON 81317 or 81323 HOLE SAW MANDREL BI-METAL.  New in the box.81317 - MANDREL 1/4 CHUCK81323 - MANDREL 3/8" Chuck (9/16" - 1-3/16")TEXAS residents must add 8.25% sales tax.  FREE USPS domestic shipping which includes tracking information.  I ship domestic or international.  Thanks for looking!