Overview Reviews Product Description The large, soft synthetic rubber mallet head on the SU1R provides an excellent counterpart to the SU2R for minimalist repertoire, and provides a full, articulate sound from the lower register of the marimba without the worry of damaging bars. Product Videos Custom Field Product Reviews Write a Review Write a Review × ProMark ProMark SPYR SU1R Very Soft Rubber Marimba Mallet Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *