This key is a combination of some of my best performing keys, it has 80 key series arm dimensions and bearing set up, a stand alone base similar to the 099 key only in this case it has three legs instead of four to increase the stability, and fitted with a crush bar contact adjuster similar to the long Naval key types only with isolators, it is now finished enough to test it out and it is a fine key, the weight under the knob balanced against the hard close in to the pivot spring, looking at the design it is obvious where there could be some improvements, the actual angles of the triangle base could be changed to lengthen the base and then the weighted knob could be positioned over the rear foot to give the key a neater appearance, I did try it with this key but it compromised the performance making it front heavy so that change may be incorporated in the Mk2 if there is one, it now has an excellent quiet but lively action, another key you can send all day on.