A: 21.8mm / B: 114.0mm / C: 15.3mm
I bought this product to fit on my Sauer 100 XT .308 to replace the Hexalock mounts.
Excellent product fitted and aligned perfectly.
I did have difficulty fitting one of the attachment screws to the action though.
This after careful examination was found to be due to deformation of the screw thread start.
I overcame the problem by carefully abrading the end surface of the screw to remove the deformed thread.