This is a part number from QUADRANT, a manufacturer of engineering plastics and advanced materials. The 21001292B065050000 part number is a specific type of acetal thermoplastic material that is often used for applications requiring superior strength, stiffness, and/or toughness. This material also offers resistance to a wide range of chemicals, high wear resistance, and low moisture absorption. It is frequently used in applications such as bearings and conveyor components, slides, gears, pump components, and structural components.