Item Type: Position Indicator Material: ABS Product Model: 09 Series Axial Pitch: Approx. 1.0mm / 0.04in Maximum Speed: 1500RPM Inner Diameter for Shaft: Approx. 20mm / 0.79in Package List 1 x Position Indicator 1Position Indicator: The feeding counter can pass through the spindle to directly read the position of machine components, very simple. 2With Clear Display: Clear digital display has wide measurement range and high accuracy, which will largely simplify the data reading. 3Reliable Measuring: Different pitches can be selected based on the screw pitch, and the feed rate can be directly displayed in numbers. 4Better Application: Widely applied to woodworking machinery, packaging machinery, labeling machinery, cutting machines and so on. 5Quick Installation: Comes with a compact size and a light weight as well, the shaft feeding counter is very convenient to install.