Crafted from durable POM material, this bearing pulley is well-constructed to minimize vibration and noise, creating a quiet environment.ABEC Tolerance 1 (P0), Z2 noise level for most general use. Smooth motion, low noise, slide flexible, compression wear.Superior performance in terms of sealing properties, operational efficiency, durability, and extended service life, this product ensures long-lasting reliability and effectiveness in various applications.This pulley is commonly used in doors and windows for smooth tracking and operation of machinery and equipment. It also serves as a good choice for furniture hardware accessories, mobile doors, offering versatility for a wide range of projects.