Lyra Metallophon Mallet No. 61270 plastic ball, x-Hard, 25mm Mallet No. 614751 rubber ball, soft, 20mm Mallet No. 614752 rubber ball, medium, 20mm Mallet No. 614753 rubber ball, hard, 20mm Mallet No. 61470 plastic ball, x-Hard, 25mm Mallet No. 61453 rubber balls, hard/soft, 20/25mm Mallet No. 61454 rubber & wooden ball, hard, 20mm