3M Comfort Cradle Head Harness Attachment, FF-400-06, replacement part, 5/case The 3M Comfort Cradle Head Harness Attachment FF-400-06 is a replacement part for use with 3M Ultimate FX Full Facepiece Reusable Respirator FF-401, FF-402, FF-403. Product Information Brand 3M Part # 7000052737 Origin Country USA Product Type Replacement Parts Extra Product Information3M Comfort Cradle Head Harness Attachment FF-400-06 is to be used with compatible productsReplacement part can extend respiratory equipment service life.Product InformationLightweight frame weighs only .8 ouncesMaintains original performance standards of facepieceReplaceable part can potentially result in respiratory equipment cost savingsReplacement part to use with 3M Ultimate FX Full Facepiece Reusable Respirators FF-401, FF-402, and FF-403