The knob of the Mitutoyo Applicable Holding Stem Dia 4 8,9,53 mm Magnetic Stand with Fine Adjustment is flexible and can be rotated in any direction. This Applicable Holding Stem Dia 4, 8,9,53 mm Magnetic Stand with Fine Adjustment Magnetic Stand consists of components such as a magnetic base with magnetic ON/OFF switch, a metallic clamp stand, and the knob with handle is attached to the frame in the central point. The magnetic stand can hold all types of dial indicators and dial test indicators for measuring purposes. The stand has the function of instant mounting and dismounting without affecting the indicators or workpiece. The stand is provided with dovetail grooves and fine adjustments. Product Attributes: Product: Magnetic Stand Model: 7011S-10 Country of Origin: Japan Applicable holding stem diameter: Dia 4mm, Dia 8mm, Dia 9.53mm (3/8 inch) Brand: Mitutoyo Clamping Force: 600 N Range: 8 mm