S-5! RibBracket IV Flex to fit legs ensuer the propper fit Fits popular profiles such as Safintra IBR, KingSpan KS1000, and similarly dimensioned profiles Slotted top hole fits standard M8 bolts and flanged nuts, channel under mounting platform can be used for wire management. Stanless capped self-piercing screws with stainless/EPDM sealing washer specifically designed to prevent swarf. Sheeting only attachement can be placed anywhere along the ribs on the roof.