Hard Hat Suspension Head Protection Suspension Type Pinlock (4-Point) Fits Hat Size 6-1/2 to 8 For Use With Skullgard(R) 460389 460409 475395 475396 475407 475408 482002 Compatible Hard Hat/Helmet Brand Name MSA SAFETY Compatible Hard Hat/Helmet Grainger Part Number 35GJ60 35GJ70 35GJ71 35GJ72 4LN78 4LN79 4LN91 4MC46 4MC52 4MC53 4MC55 4MC79 5KAW8 5KAW9