These NSK couplings come standard with a miniature head. They have a power of 17 W. It features speeds from 390,000 to 450,000 revolutions per minute. The head measures 10.3 mm x 11.7 mm. It is only compatible with short shank burs. To order the Optic X500L, use code P495. To order the Non-Optic X500, use order code P861.
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