Blue Boar Heavy Duty 7/16-inch shank Quick Change Dual Arbor Mandrel Kit for Hole Saws from 5/8” to 7” diameter, with both 5/8”-18 and 1/2”-20 thread mounts. - Hole Saw Sets - Amazon.com
Lenox Standard 7L Hole Saw Arbor 1779806 - The Drainage Products Store
Luckyway 3-Piece Hole Saw Mandrel,Fit 3/4-Inch to 6-Inch Diameter,Including 7/16-Inch and 3/8 Inch Shank Hole Saw Arbor and 3-Piece 1/4 Inch HSS(M2) Central Drills - - Amazon.com
Arbors And Accessories For Bi-Metal Hole Saws KW04-90
Quick Change Hex Shank Mandrel Bimetal Bi Metal Hole Saw Arbor with HSS Pilot Drill Bit_China Drill Bits Manufacturers, Factory, Wholesale - Good Prices
Lenox Tools 1779670 6L Snap Back Arbor with 3-1/4-Inch Pilot Drill Bit for Hole Saws - - Amazon.com
AABTools | RIDGID 53075 Holesaw Arbor From 21-152mm
Morse® SDS1/2QC Durable Heavy Duty Hole Saw Arbor, SDS Shank, Carbon Steel - 259324 - Northern Safety Co., Inc.
Klein Tools 3/8 in. Hole Saw Arbor with Adapter 31905 - The Home Depot