❤Get Yours Expansion Bolt Set Now: https://bit.ly/3jbThmx Expansion is created by tightening a threaded bolt that draws a tapered cone expanding a sleeve against the walls of the hole. Widely used in fence, burglarproof doors, and window, home decoration, engineering, etc. No rust, no deformation, non-pollution. HOW TO USE Heavy Expansion Bolt Set: 1. Drill a hole in the wall first; 2. Insert the hollow wall anchor into the hole; 3. Hold the screw head with a tool and pull it outwards, and the anchor expanded; 4. Remove screw position fixture, re-insert screw and tighten. #SHORT #SHORTS