The MM ARBOR A 41 1/4 - A12 from Field Tool Supply is a precision arbor designed for use with milling machines. This arbor features a 1/4-inch diameter and is compatible with A12 collets, making it versatile for various machining tasks. Constructed from high-quality materials, it ensures durability and stability during operation. The arbor's design allows for easy installation and removal, enhancing productivity in the workshop. Ideal for both professional and hobbyist machinists, this arbor meets industry standards for quality and performance, ensuring reliable results in milling applications.