Hard Hat Suspension Head Protection Suspension Type Ratchet (4-Point) Fits Hat Size 6-1/2 to 8 For Use With V-Gard(R) Compatible Hard Hat/Helmet Brand Name MSA SAFETY Compatible Hard Hat/Helmet Grainger Part Number 43FC73 43FC75 43FD93 Compatible Hard Hat/Helmet Manufacturer Part Number 43FC73 43FC75 43FD93