※ This is a set of 2. 【Get the same effect as Speed Master Bearings at about 1/3 the cost!】 Recent low-cost drum pedals are simple and easy to use, without adjustment mechanisms that confuse beginners, but 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 will dramatically improve the pedal's movement. However, you might hesitate to spend 5,000 yen (10,000 yen for a twin pedal) on a low-cost pedal to install Canopus Speed Master Bearings (formerly Speed Star Bearings). So, we created these grooved bearings. They have a simple shape, with grooves cut into the outer ring of NSK stainless steel bearings (＊). They don't have a heavy bearing holder like Speed Master Bearings, so the inertia is smaller, and the movement is more agile. They can be installed on the following models: TAMA Speed Cobra 310 series TAMA Iron Cobra 200 series Other models may also be compatible. Please inquire in the comments. ★ Here is a comparison video using TAMA HP300, which has the same spring-related parts. https://youtu.be/ERCptkfbH7k?si=6_DiDntv70xZgAg_ ★ Here is a video showing that our bearings have the same low friction as Speed Master Bearings. https://youtu.be/i2p9vLpm7tg (＊) Although the outer ring of the bearing has been cut, the necessary strength for a spring roller is ensured. speedstar bearing speedmastar bearing