These arbors are designed to absorb vibration.

Each of these sets comes with three differently sized arbors.

Mount these arbors into manual milling machines that have an R8 taper spindle.

Hold end mills, drills, and reamers securely in manual milling machines that have an R8 taper spindle.

Convert tools with a Morse taper shank to an R8 shank for use in manual milling machines that have an R8 taper spindle.

For better control when drilling small holes with a drill press or milling machine, the attachment on these arbors lets you apply light feed pressure with your fingers while the machine rotates the bit.