Forgefix Pozi Compatible Screw Cover Caps are specifically designed for use with Pozi Compatible Screws, sizes 6 and 8 gauge or 3.5-4.5mm. The male Pozi insert underneath the cap head fits snugly in to the Pozi head of the screw.APPLICATION:Offers a concealed yet aesthetically pleasing finish where screws would normally be bare to the elements or the eye.Used for many sign and sanitary installations as well as cupboard and carcass assembly. Ref: UTTK5183