HANS® helmet anchor (male screwe only-the female parts is inside the helmet). For one helmet (to be used exclusively with models SC754F-SC756F-SC761E-SC759E-SC769E- SC769F-SC771F-SC772F-SC777K-SC785-SC785K-SC781-SC781K-SC784-SC783-SC794-SC788-SC787). According to FIA 8858-2010, 8860-2010, 8859-2015