The 31 AT10 27-200ZA is a rubber V-belt made by the company Optibelt. It is designed for heavy-duty drive applications, such as those found in industrial equipment. The belt has an overall top width of 31mm, with an Angle Top (AT) profile of 10mm. The length (or effective circumference) of the belt is 200ZA, or 200mm in diameter. It is made from high-tensile strength polyester-polyurethane and is resistant to oil, grease and abrasion. The belt is suitable for long life operation and high-speed rotation applications, making it ideal for many industrial and manufacturing applications.