Be careful when selecting products, because "standard" is basically another product. The retaining plate is snapped over a claw system and keeps then as bombproof that they can be solved only with extreme difficulty of the bracket. Man should therefore always leave the plate at the wheel, where it quite dirty most likely. So better to buy the "quickfix" variant. The has described in the reviews buttons for easy release of the plate. That's what I'm going to do now.