LOBSTR Traditional Tridacious and Standard Type; Through thorough heat treatment, the toughness of special steel is sufficiently exerted by its thorough heat treatment. Precision forged for long term use The high precision angle screws make it less rattle and the opening and closing is smooms. The oscillation angle of the plate is 20 degrees. The plates can be replaced by the user. (Excludes 25 and 38 mm) (snap ring type); Uses: For installation and securing materials [Caution/Conditions] Tools (snap ring pliers) are required to replace the plate set. Do not use it as a hanging device. Please do not use it as a scaffold or attach it to objects and use it as a scaffold area. Tighten it tightly. Do not strike it with a hammer or other to expose it to impact. Please add pipes, etc. to use. ● Tightening work with taper or slope as it is slippery, so please work with particular caution. Image Note: The image uses (B75).