What brand were you using that shattered and was it a socket type or L shape?
Sorry, I forget what brand and product does not have it stamped, have had them for 5 years and use them a few times a month. I use a torque wrench and the riser screws were torqued to 18 ft lbs a few days ago when I installed the Murph bar risers (I did use blue thread lock on them)
.. again was very surprised when this broke.
Product stamped with
- Chrome Vanadium 6 mm (on chrome plated body of socket)
- Taiwan (on chrome plated body of socket)
- Allen shaft has 6 stamped on it and crack runs through the the 6 ......
See photos