Most if not all 2015 + helmets from the usual makes will have the anchors already installed, if not installed I believe the holes are already there, no special tools.
Dirk
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Safety Chair, PCA Potomac Region
Retired DE Chair, PCA Potomac Region.
Retired Co-Chief Instructor PCA Potomac 2008-2012
1971 914/6 (Factory) 3.2 Track car
1988 911 Targa
1986 944
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