General description Used to secure plasterboard to drywall and ceiling track systems with a maximum thickness of 0.6mm. Technical specifications Size: 3.5 x 38mm Bit size: PH2 Colour: Black Box Quantity: 1000 Usage Features Phillips No.2 recess for a positive drive. Bugle head design reduces the likelihood of damaging the board surface. 25° super sharp point for ease of penetration. 60° twin-thread offers excellent pull-out values and insertion.