TimberTech CONCEALoc® Hidden Fastener Clips & Screws Bucket, 1000 sq. ft. a seamless and fastener- surface designed exclusively for TimberTech grooved boards. These high-quality stainless steel clips ensure long-lasting durability and reliable performance. The 1,000 sq. ft. bucket includes stainless steel screws and clips that can be easily installed by hand using a drill or driver, with a T15 star-drive bit included for convenience. Please note that CONCEALoc fasteners are not compatible with steel or aluminum framing, as the screws are driven at a 45-degree angle through the clip into the joist. Model Number: CLOCBULK