Forgefix drywall collated screw phillips bugle head sct forgefix dws25bpc these forgefix phillips single thread drywall screws have a black phosphate finish for increased durability the screws come complete with a phillips no2 insert bit their bugle head allows the screw to sink effortlessly into the dry lining eithout the need for countersinking which in turn minimises the damage to the surface they are supplied collated with 50 screws per strip and 1 000 screws per box designed for