3 Pcs M10 x 120mm 304 Stainless Steel Expansion Bolt External Hex Expansion Screw Bolt Sleeve Anchor，Pool-Safety-Cover Expansion Bolts，for Concrete

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About 3 Pcs M10 X 120mm 304 Stainless Steel Expansion

Description: Size:M10x120mm expansion bolt Thread Diameter 0.39inch/10mm Total Length 4.72inch/120mm Expansion Tube Diameter 0.47inch/12mm -Universal replacement anchor assembly for in-ground swimming pool safety covers and mesh covers -Solid stainless steel anchor assembly,fits 0.31inch/8mm Hole -Universal replacement pool cover anchor for any safety covers -Designed for concrete and Pavers deck -Made from high quality 304 stainless steel metal-longer durability in harsh cold weather,humid environment Expansion is created by tightening a threaded bolt which draws a tapered cone expanding a sleeve against the walls of the hole. Widely used in fence,burglarproof doors and window,canopy,air conditioning rach fixation,home decoration,engineering,etc. No rust,no deformation,non-pollution. How to use: Put the expansion screw into the ground or the hole on the wall and then tighten the nuts of the expansion bolt with wrench. The bolt goes outside while the metal sheath does not move. Thus the bigger head of the bolt will expand the metal sheath, making it fill the whole hole. Now, the expansion screw can not be pulled out. Package includes: 3 Pcs Expansion Bolts