This NSK Spindle is suitable for the grinding of the inner surface of slender and deep holes. (Example) If a ø0.55" grindstone is mounted on the grinding arbor AGM-01, this spindle is suitable for the inner grinding of ø0.59" or more and with the depth of 1.57" or less. • Allowable Motor Speed: 30,000 rpm • Standard Size Collet Chuck (CHM-3.175): ø1/8" • Weight: 6.03 oz. • NSK Catalog Number: AS11510 Included Equipment: • Collet Chuck ø1/8" (CHM-3.175): 1 pc. • Wrench (7 x 5.1), (6 x 4.5), (20 x 24): 1 pc. Optional Equipment: • Collet Chuck (CHM-[][]): ø1.0 mm~ø3.175 mm • Grindstone Arbor (AGM-01): For grinding wheel with I.D. of ø5 mm