Proflow 400 series push lock fittings are and easy way of plumbing your custom application. Used in conjunction with 400 series hose to give your project a customised specific colour scheme. Made with proflow's patented corrosion resistant double anodised finish and manufactured from 6061 T6 grade billet aluminium, these fittings are fully reuseable and look great whatever the purpose without the need for use of a hose clamp. Our metric sizes make use on late model and import vehicles a breeze. For use with 400 and 525 series hose.