These tilting adapters work fine are well made and have lasted me well. However, they do make the speakers look slightly wonky when in use which I think looks a little unprofessional and I would always prefer to use speakers with tilted top hats already installed as they ensure the weight is properly balanced over the centre of the stand, but they get you out of trouble when avoiding reflections off a back wall. The tightening nuts can dent aluminium speaker stands it would be better if they either fit more snugly on 35mm stands thus removing need for tightening bolt or had some sort of rubber cushion.
Great adapter from K&M which enable you to angle your speakers down at the ground to lesson reflections (sound rebounding) from the back of the room. Very handy if you're facing a wall in a wide room - can stop a lot of echo and feedback problems.
This is well made and will fit on to and speaker stand or speaker pole. Recommended.