Parameter: Holders. Inner diameter: 28.7 mm. Thickness: 2.5 mm. Length: 100mm. Storage size: 100 * 55.6mm. Weight: 170g / piece. Material:aluminum alloy,Tent nail. Weight:132g/pc. Material:Steel. Length:25cm. Diameter:0.9cm. Features: New Design to More Stable. Tent nails of the same length can be inserted deeper into the ground. Can insert 3 tent nails to form a fixed triangle, which is more stable and can resist wind from all directions. It is highly recommended to use with 25cm tent nails. Two Sizes Available: At present, the diameter of most tent poles and canopy poles is 28mm and 33mm. Please confirm the size before purchasing. High Strength Material:A fixture that fixes the pole when installing tarps, tents, and awnings. Made of aluminum alloy, it has high strength, excellent corrosion resistance, and is not easily deformed. It is oxidized, has a uniform color, does not fade, and has excellent durability. It is an indispensable holder for setting up tents and tarps in outdoor scenes such as camping.