The Wilson Pro Staff Countervail / Wilson Pro Staff CV.
Based on the comment below from Ray, it appears this “Version 2.0” is a slightly different design from the prior model.
Here’s an overview from PDH Sports:
This is the 2017 version of the Wilson Pro Staff Countervail:
Image via squashgalaxy.com →
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Racket Specs chart
Advertised weight (unstrung): 143 grams
Advertised balance: 36
Head size: 467 cm sq
String pattern: 14 x 18