New 1 piece of 100mm 4" Diamond Turbo grinding cup wheel. The size is 100mm outside diameter, 5/8" (15.88mm)-11W threaded arbor. Excellent diamond segment measure in 21mm H x 11mm W x 8mm thick. More durable and aggressive tool. | General purpose for professional user. US-BASED CUSTOMER SERVICE: Available by chat, email, phone, or visit us at our customer service center in La Crosse, WI.