Nice fit, slightly deeper than the plastic D'Addario

The larger slot is a perfect fit for the ancient Grover (patent pending) tuners on the banjo.

Despite that this is a production model winder (as probably 95% on the market are), it still provided excellent fit with, again, excellent, smooth action as well as outstanding tactile fit in the hand

Great fit and finish; love the look and feel of the wood; and the tuner slots capably fit two sizes of buttons.