Simpson FSBIT Fascia Counterbore Bit Type 316 Stainless, 1/4 in. Arbor, 0.25 in. Bore, Trex Approved Power Tool Accessories or in humid coastal climates

or in humid coastal climates where standard fasteners corrode prematurely

Member Size: 4x6 or 4x8

It should be installed with 0

and are bits included

What is the purpose of the mushroom head on this anchor

Simpson FSBIT Fascia Counterbore Bit Type 316 Stainless, 1/4 in. Arbor, 0.25 in. Bore, Trex Approved Power Tool Accessories or in humid coastal climatesThe Simpson Strong Tie FSBIT Fascia Counterbore Bit is a precision engineered drilling accessory from Simpson Strong Tie, specially designed to securely fasten composite and PVC fascia while providing superior corrosion resistance. Constructed from Type 316 stainless steel, this counterbore bit bores a hole that, when the fascia screw is installed, allows the material to expand and contract as the environment changes delivering a clean, professional