I am not sure that all do, But the good ones should, If you use the power lift side of the grip that is about 1/8'' reverse pitch so if your driller drills your fingers with 1/8'' reverse , Now you have 1/4'' reverse .
On the other hand if you use the oval side and want 1/8'' reverse then you drill the ball with 1/8 reverse.
Personally i drill mine @ 0 pitch then use the power lift side and get 1/8'' reverse.
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Visionary Test staff 07/08