The clip on K4 harness mount support plate. This saves you making holes in your harness to bolt the bracket on, and also means you can easily swap between harnesses or remove at the beach.
Stealthy black to be less obvious in your pics and videos.
£24 for the plate which includes the straps and bolts to attach the harness bracket.

Options to buy complete set up are:
Standard mount with plate, £88.
Long mount with plate, £98.

Extended mount with plate, £108.