Made from 304 stainless steel for maximum corrosion resistance and durability.
Expansion is created by tightening a threaded bolt which draws a tapered cone expanding a sleeve against the walls of the hole.
Easy to install. Widely used in fence,burglarproof doors and window,canopy,air conditioning fixation,home decoration,engineering,etc.

For CALIFORNIA residents only:

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please note that by posting this Proposition 65 warning, we are notifying you that one or more of the Proposition 65 listed chemicals may be present in a product. With Unique Bargains’ products, the exposure to these chemicals may be of no significant risk to you, but out of caution, we have elected to place this warning on our site to make sure our customers are informed.

You can find more infomation at http://www.oehha.ca.gov/proposition-65/about-proposition-65.