Complete with TFX screws, Pozi 2 Drive tool and Plasterboard fixings, our Combi Tub is ideal for a range of electrical projects. · · · 4.2mm in diameter and 35mm in length · · Made from high-quality steel for strength and durability · · Quick and easy to use, no pre-drilling required · · Creates a strong, secure hold in plasterboard · · Ideal for Fixing Plasterboard to Timber Studs · · Sharp Point and Aggressive Threads for Easy Penetration