Bulk Packs of Composite Decking T Clip Fixing to Fit composite decking boards. Fits between the boards, into the board grooves, and screws directly to the decking joists. Polynylon Clips and 40mm length Black 403 Grade Stainless Steel SMALL HEAD decking Screws included. Our screws will not scratch your boards, or rust or break.Full ANTI CORROSION, 5mm board spacing - the CLOSEST on the market. Made of high density non perishable Nylonethelene. Suitable for 99% of composite decking boards on the market. Composite Decking Hidden Fixing Fasteners Plastic T Clips and Black Stainless Steel Screws 403 Grade. Polynylon Clips and 40mm length BLACK 403 Grade Stainless Steel SMALL HEAD decking Screws included. Our screws will NOT scratch your boards, or rust or break. 5mm board spacing - the CLOSEST on the market. Highlands, Scottish Islands, Offshore islands and N. I are 2-3 day service, either RM or Courier depending on weight / size. Return posting costs will be at your expense. Please check this listing page carefully as the answer is usually there.