Designed for attaching dense board to timber stud work. The super sharp point and high low thread is specially designed for an excellent fixing into timber. CE Standard Web BS EN 14566:2008 Corrosion Rating 1 - Clean, dry & low humidity environments Description Designed for attaching dense board to timber stud work. The super sharp point and high low thread is specially designed for an excellent fixing into timber. Driver Bit Size PH2 Finish Black Phosphate Head Type Reduced Countersunk Included Items PH2 S2 Bit (Qty 1) Length inch 2 Length mm 55 Material Carbon Steel Max Drilling Thickness mm 0.6 Pack Dimensions L x W x H mm 230 x 130 x 90 Pack Weight kg 2.765 Point Type 25° Sharp Product Code 00055DRYD Recess Type Phillips Size mm 3.9 x 55 Substrates Softwood, Thin Sheet Metal, Drywall Thread Dia. mm 3.9 Thread Length mm 50 Thread Type High-Low