Hard Hat Suspension, Head Protection Suspension Type Ratchet (4-Point), Fits Hat Size 6-1/2 to 8, For Use With Americana & Americana360 Mega Ratchet hard hat, Compatible Hard Hat/Helmet Brand Name AMERICANA 360, Compatible Hard Hat/Helmet Grainger Part Number 22FF71, 41N887, 41N888, 41N889, 41N890, 41N891, 53EA39, 53EA40, 53EA41, 53EA42, 53EA43, 53EA90, 53EA91