Hard Hat Suspension, Head Protection Suspension Type Ratchet (4-Point), Fits Hat Size 6-1/2 to 8, For Use With Americana Mega Ratchet Full Brim hard hat, Compatible Hard Hat/Helmet Brand Name AMERICANA WILDLANDS, Compatible Hard Hat/Helmet Grainger Part Number 19436, 41N893, 41N894, 41N895, 41N896, 41N897, 53EA48, 53EA49, 53EA50, 53EA51, 53EA72, 53EA73, 53EA74, 53EA76, 53EA77, 53EA78