These are not for dressage saddles.

They come with one way security screws. 

The SL850 from Bulldog is a Steel Saddle Stop with Wall Bracket for the quick and secure storage of saddles.
The Saddle Stop has a highly visible yellow powder coated finish and it is fitted with the high security Bulldog Plunge Lock, supplied complete with 2 keys and fixing screws.
The wall bracket has a 30mm x 12mm steel construction and it is suitable for fixing to either brick or wooden walls.

Supplied with the Bulldog Plunge Lock which can be quickly locked without use of a key
Wall bracket suitable for fixing to brick or wooden walls
Supplied complete with 2 keys and fixing screws
Highly visible yellow powder coated finish
Wall bracket is manufactured from 30mm x 12mm steel
Ideal for quickly securing saddles