Holds feature an internal safety device which holds the unit together in the unlikely event of one cracking around the bolt fixing (if overtightened). This stops the 2 halves breaking off and falling and possibly injuring someone.
Colours supplied are random
Price is for the set of 10 (from 1 to 0) holds excluding the bolt or wall fixing
It is important not to overtighten holds and the special T bar hex key helps ensure they are not overtightened.