Simpson Hi-Lo T25 Cement Board Screw #8 x 1-5/8 in CBHL158R600 600-Count Column Base 11 is a Chamfer Bit

11 is a Chamfer Bit with Bearing with Bearing Guide

What is the 1616HL designed to be used for

Decks and deck post bases

Featuring a built-in 1-inch standoff that helps prevent rot at the post end and a slotted anchor hole for easy adjustability

Simpson Hi-Lo T25 Cement Board Screw #8 x 1-5/8 in CBHL158R600 600-Count Column Base 11 is a Chamfer BitSimpson #8 x 1 5 8" Hi Lo T25 Cement Board Screw CBHL158R600 is a professional grade fastening solution from Simpson, engineered specifically for securing cement backerboard in tile and construction applications. Featuring a high low thread design and a corrosion resistant multilayer coating, this screw delivers reliable, rust free performance in demanding wet and moisture prone environments. This package contains 600 screws. Key Features 6 lobe T25