Trend WP-AIR/P/18 New Replacement Internal Headband for the AIR/PRO This is a genuine Trend replacement part. If the internal head band is worn or damaged in your AIR/PRO mask - this is the part for you. Made up of: 1x Head Band2x Knobs M62x Bolts M62x Friction Washers2x Pivot Brackets (L & R)2x Pivot Bushes1x Top Pad FEATURES Fits 20.5 In. to 24.5 In. head Made of high density plastic Adjusts size with press in knob Easy to replace SPECIFICATION Part Number: WP-AIR/P/18 Weight: 0.2970 Kg