Emergency Maneuver that starts with Heim? 3 of 13 
Details and dimensions: 
 
Material: 7075 aluminium began with 1.5" OD bar. 
 
Smaller part: 
Major OD: 1.300" 
Minor OD: .960" 
Overall Thickness: .135" 
Thickness of Major OD: .075" 
Thickness of Minor OD: .060" 
ID: .785"  
 
Larger part: 
Same as Smaller part except added a .250" spacer on the flat side 
 
Note that the side of the Major OD  facing the Minor OD step has three angles (kinda sorta like a three angle valve job). The largest OD got ~ a 45 degree chamfer, then perhaps a 65 or 70 degree chamfer, then the 90 degree. I didn't measure the 65 or 70 degree cut, but it was the largest angle I could get without hitting the chuck or the Minor OD. It allows a little more articulation. 
 
Y13-12-15
 
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