A 9-piece 6-point Snap-on deep socket set 1/2"-1"
This set came on a rail, but I have it in a Mac tray which was for a bigger set, so there is extra room to add more sockets.
Also included is a Mac 1-3/16" socket.
Below is the description and price from the online Snap-on site.
Set, Socket, Impact, Deep, 6-Point (9 pc) (1/2–1")
268.00 USD Item: 309SIMYA
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