We thought that but its different this is the same size 12 point XDH part number the spanner inquisition is XDES part number?That’s a 12 point
Reduces slippage, quite expensive and the rolls Royce of spanner’s
Only thing I can think of seeing them on was Hydraulc motor about 30 years ago we used a 12 point socketlooks like a spline nut and dam ive not got a set of them yet
edit to late to the party posted at same time
Its winch boys I will ask himI see them quite a bit, do you want to sell it ?
Thanks we are aware of this system but it has no date stamp, we have seen this before but no idea why some stuff isn't dated, the paten numbers date to 1966 so it must be after that?View attachment 217843
Pic, from current Snap On catalogue. There will be a funny symbol on it, this is the date code for year of production. A chart can be found online to identify year.
Sorry pic is a bit blurry.