【Get the same effect as Speed Master bearings at less than 1/4 the cost!】 While the TAMA HP50 is a fine model, labeled "The Classic Pedal" and incorporating new ideas in various places, unfortunately, the spring roller is still the old-fashioned resin ring. In fact, the part with the greatest friction resistance in a drum pedal is this spring roller section, and replacing it with a bearing significantly improves the pedal's movement. You might think of installing Canopus Speed Master bearings (formerly Speed Star bearings)... but currently, Speed Master bearings compatible with the HP50 are not available. So, we created these grooved bearings. They have a simple shape, just a groove cut into the outer ring of an NSK stainless steel bearing, and they don't have a heavy bearing holder like Speed Master bearings, so the inertia is small, and the movement is more agile. Compatible with the following models: TAMA HP50 ★Here's a comparison video before and after the replacement. https://youtu.be/tpSYGfZC9Vw?si=YxT03bTOWDmr2Xtb ●Please comment if you want multiple units. speedstar bearing speedmastar bearing