[Material] Sturdy plastic design that is resistant to corrosion and built to last.[Dimensions] Fits most composite boards are available on the market, with a 5mm gap and a base depth of 7mm.[Easy to Use] Suitable for a variety of uses, including woodworking projects, fixing WPC composite deck boards, DIY decking.[Long-lasting Material] Composite deck board T-clips made from durable plastic that is strong, sturdy, and resistant to corrosion.[Package] Each pack includes 100 TUDA T-clips; Total number of packs available: 5[Screw reccomendation] Recommended screw size: L32~35mm, cap width 5-5.5mm, screw thickness 3-3.5mm