The highest-strength concrete screw has v-notched, high-low threads for anchoring into concrete, masonry, and brick. The advanced R-Blocker™ coating offers exceptional test results in salt spray testing. Wej-Con concrete screws install quickly in a pre-drilled hole and can be removed and reinstalled. Each box of Wej-Con Concrete Screws includes a drill bit. TAPCON EQUIVALENT
ENGINEERED IN THE USA
Flat Head: 410 Stainless Steel with Silver R-Blocker Coating
Flat Head: Heat-Treated Carbon Steel
Hex Washer Head: 410 Stainless Steel
Hex Washer Head: Heat-Treated Carbon Steel
NOTE: Always wear safety glasses. Normal safety precautions should be observed when drilling the holes to avoid electrical installations, other utilities and reinforcement bars.
The products are great and I received the products quickly after ordering.