Meeco ME5200 Tek Head 200 Pieces Box Stove Pipe Anchor ScrewsBlack Oxide Self Drilling TEK head screws. All single wall vent pipe should be screwed together at each joint with a minimum of 3 screws. Self drilling TEK head screws. Black oxide finish. Specifications Item Number ME5200 Brand Name Meeco Series Red Devil Item Weight Pieces 1lbs Size 200 Pieces Product Category Stovepipe Anchor Screws Warranty Limited Lifetime Warranty