【Get the same effect as a Speed Master Bearing for less than 1/4 of the cost!】 Recent low-cost drum pedals are simple and easy to use, without confusing adjustment mechanisms that might mislead 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 dramatically improves the pedal's movement. However, you might hesitate to spend 7,000 yen (14,000 yen for a twin pedal) to install Canopus Speed Master Bearings (formerly Speed Star Bearings) on a low-cost pedal. That's why we created these grooved bearings. They have a simple shape, just the outer ring of an NSK stainless steel bearing with a groove cut into it (*), and because they don't have a heavy bearing holder like the Speed Master Bearing, the inertia is smaller, and the movement is even more agile. Compatible with 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's a comparison video using TAMA HP300, which has the same spring-related parts. https://youtu.be/ERCptkfbH7k?si=6_DiDntv70xZgAg_ ★Here's a video showing that our bearings have the same low friction as Speed Master Bearings. https://youtu.be/i2p9vLpm7tg ●If you want multiple bearings for twin pedals, etc., please comment. (*) Although the outer ring of the bearing has been cut, the necessary strength for a spring roller is ensured. speedstar bearing speedmastar bearing