Hard Hat Suspension, Head Protection Suspension Type Ratchet (6-Point), Fits Hat Size 6-1/2 to 8, For Use With Omega II Mega Ratchet Cap and Full Brim hard hats, Compatible Hard Hat/Helmet Brand Name OMEGA II, Compatible Hard Hat/Helmet Grainger Part Number 3JPH9, 3JPJ4, 41N876, 41N877, 41N878, 41N879, 41N880, 41N883, 41N884, 41N885, 41N886, 53EA16, 53EA17, 53EA18, 53EA19, 53EA20, 53EA21, 53EA22, 53EA23, 53EA24, 53EA34, 53EA35. This item has been restricted from sale in the following state (s): []