1. Smooth movement without crawling at low speeds 2. It can still operate stably at a low speed of 5mm/s (according to JIS B8377 specifications) 3. Bidirectional low-friction action can be achieved 4. Light weight and improved performance (new structure same as standard products) 5. Can be installed interchangeably with standard products 6. With magnetic switch (CDJ2Y-Z series: CDJ2Y, CDM2Y-Z series: CDM2Y-Z, CDG1Y-Z series: CDG1Y, MDBY-Z series: MDBY, CDA2Y-Z series: CDA2Y, CDS2Y series: CDS2Y, CDQSY series: CDQSY, CDQ2Y-Z series: CDQ2Y)