Check the listing for details. Blake CXA-9 8" Outside Range Feeler for Co-Ax Indicator. Condition: New. Listed at 54.99 USD. Delivers quick, accurate centering in boring and milling set-upsApplications Provides simplified method for centering workpiece or fixture on horizontal or vertical machines, external or internal diameters - also with NC, EDM and other hard to turn spindles.Features Face indicator remains in fixed position while the machine spindle rotates, allowing operator to accurately position machine table.Locating accuracy: to within .0002" of true centerIt is recommended that operating speed not exceed approximately 800 RPM.Blake Co-ax Indicator Feeler Product Specifications Brand Blake Model # CXA-9 Type OD Feeler, Range: 8" For Use With CX-1 Measuring Range 8" Price Table Description Feeler, Outside Diameter, Range: 8" Weight 0.0625 lbs. Country of Origin UNITED STATES OF AMERICA