Very good frame mount (to go with excellent lock). A bit expensive having it shipped from USA to UK. The edge that touches the bike - particularly around the hole for the bolts - might be reinforced better. Sooner or later it gives way and turns into a big hole. After the first time, I learned to hold the mount on with cable ties.
Lock mount works well for holding lock.
The mount works great with the Locks. Quick on and quick off.