Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: Feature:Reamer with one or more teeth to cut holes machined surface of the thin metal layer rotary cutter. After working through the hole cutter can obtain precise size and shape.Scope of application: reamers to ream the workpiece has been drilling (or bore) hole behind the processing, primarily in order to improve the machining precision of the hole, reducing the roughness of the surface, is finishing and semi-finishing for hole machining toolBlades are adjustable and move within tapered slots in the reamer body.To adjust these reamers the blades are moved within these slots by loosening the nut at one end and tightening the nut at the other.Movement permits the reamer to be set to any desired diameter within the range of the size adjustment.Adjustment feature allows reamer to maintain a specific size by compensating for wear.Can be readjusted to expand and reground to the appropriate size and resharpenedOnly could use by hand, use on machine could damage the blade.Maximum workpiece can not be more than 220 Brinell hardness.Specification:Color:Silver and BlackReamer Product material: HSSAdjustment range: 6mm-6.5mm(0.236in-0.255in)Environment: handDimension:97 x 6mm or 3.82 x 0.24Inch(L x Dia)Weight:12gPackage Include:1 x HSS Adjustable Hand Reamer Metal Hole Cutting Tool Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.