Simpson Quick Click Helmet Anchors for SA Helmet are durable and work with nutwashers that mount inside the helmet. The package includes a wrench to align the anchor along with a Quick Click anchor that attaches or releases instantly. There are two anchors supplied for right and left sides with relevant hardware. The anchors work in conjunction with the separately sold Quick Click tether. The function of these anchors is to keep the head's position relative to the body, transferring energy to the stronger chest, torso, shoulder, seat-belts, and seat during deceleration.