Hard Hat Suspension Head Protection Suspension Type Pinlock (4-Point) Fits Hat Size 7 to 8-1/2 For Use With V-Gard(R) Compatible Hard Hat/Helmet Brand Name MSA SAFETY Compatible Hard Hat/Helmet Grainger Part Number 10E656 22EY79 22EY80 22EY81 22EY82 22EY83 22EY85 22EY86 22EY87 22EY88 22EY89 38ZL94 3PUP8 3PUP9 3RRV4 4LN68 4LN76 4LN83 4LN85 4LN94 4LP02 4MD02 8UWM3 9D111 9FLG7