4 different diameters to choose from. Diameter: 10.75mm-11.75mm & nbsp; Excellent Quality: Adjustable manual reamer, made of high speed alloy steel, high hardness for rust protection, durability and long service life. & nbsp; Main function: applicable for casting and craft processing; cannot be used on the machine, which can damage the blade, only by hand. Wide application: widely used for drilling machining, installed in drilling machine, milling machine, etc. Contents: 1 adjustable hand reamer. Size: 10.75mm-11.75mm Features: The blades are adjustable and move in tapered slots in the reamer body. To adjust these reamers, the blades are moved into these slots by loosening the nut on one end and tightening the nut on the other. The displacement allows the reamer to be set to any desired diameter within the size adjustment range. The adjust function allows the reamer to maintain a specific size by compensating for wear. Can be readjusted to extend and retreat to the proper size and sharpened. Use only by hand, use on the machine could damage the blade. Features: Material: steel alloy. Diameter: 10.75mm-11.75mm Content: 1 adjustable manual reamer. Note: - As measurements are taken by hand, sizes shown may vary slightly. Thank you for your understanding. - Monitors are not calibrated same, the item's color may be showing slightly different from the real object. Please take the real one as standard.