Excellent Quality: Adjustable hand reamer, made of high-speed alloy steel, high hardness for rust protection, durability and long service life. Main Function: Suitable for reaming of casting process and handicraft processing; Cannot be used on the machine, which may damage the blade, only by hand. Wide Application: Widely used for boring machining, installed in drilling machine, milling machine, etc. Package Content: 1 x Adjustable Hand Reamer. Features: The blades are adjustable and move in tapered slots in the reamer body. To adjust these reamers, the blades are moved in these slots by loosening the nut on one end and tightening the nut on the other. The movement allows the reamer to be set to any desired diameter within the size adjustment range. The adjustment feature allows the reamer to maintain a specific size by compensating for wear. Can be Re-adjusted to expand and regroup to the appropriate size and sharpened. Can only be used by hand, use on a machine may damage the blade. Specifications: Material: Alloy steel. Diameter: 13.75mm-15.25mm. Package Included: 1 x Adjustable Hand Reamer. Note: - Please allow slight dimension difference due to different manual measurement. Thanks for your understanding. - Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please take the real one as standard.