Review on Uxcell Stainless Sleeve Concrete Expansion by Andrew Agarwal

Such a strong well built dowel but I got the sizing wrong. If the description says [stamp diameter: 16mm/0.63inch], it means the pilot hole diameter must be 16mm, otherwise the piston will not fit. My only bit was 1/2" in diameter (matching the size of the thread) and I had to increase the size of the hole by drilling at different angles until the shank went in.