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Welcome,

This is Vintage WW2 era Triangular Socket Set .

This set is used in mining where special triangular nut/bolt is used in the equipment to prevent an authorised service .

I do not know what standard this socket set is following and how to decribe the each individual key .

I decided to measure the side of the equilateral triangle approximately and they are as follow:

7 ,9, 11, 13, 15, and 17 mm.

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WHAT YOU SEE IN THE PICTURES IS WHAT YOU GET

IT IS AN ITEM WHICH COMES FROM NON SMOKING ENVIROMENT

WORLDWIDE SHIPPING:$18.90

PLEASE I DO NOT ACCEPT RETURNS FOR THIS ITEM

IF YOU HAVE ANY QUESTIONS PLEASE ASK ME

BUY WITH CONFIDENCE