What is THIS?

[80spiders]

First, I want to say thanks to all of the folks on here that share their time and knowledge with others. I know it takes time to read and respond so I want to say I appreciate it and I hope I will be able to assist as well down the road once I have more hands on experience with Shopsmith.
This week I stumbled into a pretty good deal on a Mark V 510. (I have a 520 that I like a lot so I was really not in the market for another machine but had to take it to get the scroll saw, jointer and belt sander. Well, the deal came with a bunch of stuff (chucks, brad point bits, saw blades, lathe centers and allen wrenches) that included the tool below. Can anyone tell me what this is?

[dusty]

A special wrench and screw driver??? Don't recognize it as a Shopsmith tool.

[Ed in Tampa]

Looks like an arbor wrench for a Sears Radial Arm Saw.

[RFGuy]

Yeah, Ed is right. Check out the link below...it is listed as a "Craftsman ~ Radial Arm Saw~ Blade Arbor Wrench"

https://www.ebay.com/itm/275187214870

[80spiders]

thank you guys. I know now not to look for someplace to make this work on the 510! Have great day.

[chapmanruss]

I agree with the others and have a Craftsman Saw wrench like it. It is common to find non-Shopsmith items with a Shopsmith for sale. Over 5 years ago I bought a Mark V with SPT's that had non-Shopsmith items. Since I have one I recognized them as parts to a Craftsman Table Saw. I left them with the seller so they could go back on the Craftsman Table Saw sitting on the other side of the room.