Top wire attaches on top of the bill for uninhibited visibility * All Schutt helmets are pre-drilled or dimpled to accept hardware * Bill and jaw mounting placement for use with a variety of helmets * For use with the following Schutt helmets: AiR Maxx T Softball Helmet, AiR-8 Softball Helmet, AiR-6 Softball Helmet, AiR-Pro Maxx T Softball Helmet