This product is K&M quality. The locking mechanism is quick and firm. The rubber end caps keep your stand and keyboard in their place. One of the rubber end caps on the feet of the stand is asymmetrical so you can spin it around and find balance on uneven floors, how clever!
Don't think, however, that this stand suits large and heavy keyboards, it does not. This is meant for small synthesizers. (I use this in my studio with a Moog Sub Phatty.)