Square RN, Extra-Thick Screw

[Features]
· Can be used for hardwood and is ideal for joists and rafters.
· Firm fit in a square hole
· Cutting blade for seat cutting
· Can be used with hardwood for a beautiful finish
· Saw blade thread ridge tips
· Reduces friction with wood
· Tip has special cutting blade
· Minimizes material splitting
· Also easy to use with hardwood