Cobra Nylon Hollow Wall Anchor For Plasterboard 4mm Screw White SKU: 161293 MODEL: 37106 Error. try again later You've successfully joined the club $ 11 .29 pack Mitre 10 Variants 10 Pack of anchors which hold up to 28kg in 13mm plasterboard. Not recommended for ceiling applications. Features and benefits No pre drilling required. Quick and easy to install. Made in America.