Slight modification of the original Z-nut trap for the RepRapPro Ormerod. It is extended downwards to provide more area for the nut to grip in. Particularly useful if using long nuts.
The B version is extended a bit downwards to make the upper bolt a complete hole and also has even more material around the Z-nut. It should fit if you have at least 2mm clearance between the stock z-nut trap and the stepper motor. This is the recommended one.
Still oriented in the odd angle for printing without supports.