Easy clamp-on installation to many popular bolt action rifles. Superior grip, ergonomics and style of your rifle. Glass filled polypropylene clamshell clamps over existing bolt handle – no bolt modification needed. Models for: Rem700 – Right Handed, Tikka T3, Howa, Ruger American Centerfire, Savage 110(not compatible with savage tactical or axis bolt knobs), and now also threaded models.