PRODUCT DETAILS Click an item to expand and learn more Overview CNC Extender Adapter for 1/4" and 1/8" shanks. Router bit and chuck sold separately.TIR = Total Indicated run-out is 0.00118" (0.03 mm)Max RPM: 18,000 Reviews ReviewsQ&ATrusted reviews byWe're looking for stars!Hear what other people just like you have to say about our tools.Read Our Reviews Questions and Answers Questions & AnswersHave a question?Be the first to ask something about this product.Ask a question