The Torque Horse 16-piece pneumatic die grinder set makes a fine addition to any workshop or garage. Featuring a high quality air die grinder, it comes with 10 grinding stones, a blow molded case, and more! Features include: - Air die grinder - Five 6-mm (1/4-inch) mounted grinding stones - Five 3-mm (1/8-inch) mounted grinding stones - Two hand wrenches - Nipple - 3-mm (1/8-inch) 6-mm (1/4-inch) collets - Blow molded case Dimensions: 9 in. x 8 in. x 2 in