Simpson CB3BLG158S #10 x 1 5 8 in. Collated Fiber Cement Board Screw Coarse Thread C 3 Galv 1500 Pk Column Caps 1 2" Cutting Diameter with 25 64" 1 2" Cutting Diameter with 25 64" Cutting Height: Raise the bit for a delicate fine point incision or engage the full 1 2" diameter to produce bold extending the useful life of the blade across demanding production use Corrosion resistant coating for lasting performance the C 3 mechanically galvanized coating helps the screws hold up in the moisture exposed conditions common to siding and backerboard applications System ready collated format straight collation and compatibility with the Quik Drive PROLDHG2 underlayment backerboard system allow for rapid