Spyder 600638 Rapid Core Eject Arbor Complete 20 UNF .375-Inch

These are so easy to use and make my work cleaner and quicker. I interchange different size hole saws quick and don't have to fish and pry the wood out of the hole saw anymore. Just push the button, pull it back and the wood releases.Don't know why anyone would by anything else.

The Idea is fantastic, but the engineering is drastically flawed ... I was on the job & the 1st hole I was drilling in the bottom of a fiberglass bathtub worked great ... pushed the magic button & pulled back the hole saw & easily removed the plug ... drilling the second hole, it stopped part way ... pulled the drill up and the drill bite was missing ... here the bite was apparently pressed into a sleeve of the second part of the bite. The drill part of the bite dropped down into the bowels of the house, never to be seen again. I am returning all parts of the 3 orders of the this poorly engineered saws & bite. :^(

Great concept only thing is the pilot bit will bust smooth off the shaft like it's almost glued-in or something. Once they fix that it'll be five stars for sure.

Item I received is not what was pictured. What I got looked more like the Spyder 600634, and I was unable to use it with the hole saws I had. The package says that it's 600638, but what they have pictured doesn't match.

thanks