Starrett A19 Oops Enlarging Hole Saw Arbor Ka19-n

works as advertised, as pretty much every Starret item

Nice little gadget, and although I haven't used it for its true purpose (enlarge already drilled holes), but it's helped me drive my other Starret holesaws (diamond and wood bits).

Verified purchase:  Yes • Condition: new • Sold by: supersonictech4u

easy and precise way to enlarge hole using hole saws

handy tool for increasing a hole with hole saws

Verified purchase:  Yes • Condition: new • Sold by: tools0234

Neat tool

Great wat to expand an existing hole
Very useful

Verified purchase:  Yes • Condition: new • Sold by: tools0234

It was what I needed, since I already had all of the other hardware to do the job. It won’t work by itself.

Verified purchase:  Yes • Condition: new • Sold by: tools0234

Excellent Value on Tool to Increase Hole Size

The Starrett Oops Arbor, Model KA19-N, is an excellent tool to stack two hole saws so that you can increase the size of an existing hole. It is very easy to use and works with both of my existing hole saw kits. Simply remove the center drill from you large arbor, screw on the larger hole saw to your existing arbor, attach the small hole saw matching your existing hole diameter to the Oops arbor, then insert the Oop arbor into the center of your existing arbor and tighten set screw. Push your larger arbor into the locked position (with pins or no pins). The smaller arbor acts as a guide for the larger hole saw. Works great. I would prefer longer threat on Oops arbor.Read full review

Verified purchase:  Yes • Condition: new • Sold by: generaltool