The Milwaukee 48-20-2172 SDS-Max Vacuum Bit is a high-quality drilling accessory designed for use with SDS-Max rotary hammers. With a size of 1-3/8 x 27-1/2 inches, this bit is suitable for heavy-duty drilling tasks in construction and industrial settings. The vacuum feature helps to efficiently remove dust and debris during drilling, promoting a cleaner work environment. This Milwaukee bit is a reliable choice for professionals seeking durability and precision in their drilling operations.