Hard Hat Suspension, Head Protection Suspension Type Pinlock (6-Point), Fits Hat Size 6-1/2 to 8, For Use With Omega II Cap and Full Brim hard hats, Compatible Hard Hat/Helmet Brand Name OMEGA II, Compatible Hard Hat/Helmet Grainger Part Number 3JPH5, 41N902, 41N903, 41N904, 41N905, 41N907, 41N908, 41N909, 41N910, 53EA25, 53EA26, 53EA27, 53EA28, 53EA29, 53EA30, 53EA31, 53EA32, 53EA33, 53EA36, 53EA37, 53EA38. This item has been restricted from sale in the following state (s): []