Precision-ground parallel supports for professional machining work. Designed for use with drilling machines, lathes, and milling machines, this 14-piece set delivers the accuracy and consistency that serious machinists demand. Key specs: Made from high-alloy, hardened steel (58–62 HRC) Parallel accuracy: 0.002mm — ground in pairs for matched performance Sizes included: 2 each of 8 × 10, 15, 20, 25, 30, 35, and 40mm Length: 100mm per piece 14 pieces total, packed in a protective wooden box Proxxon No. 24266 See full description on Proxxon.com Returns can only be accepted for unused product in its original packaging. In addition to the returned item/items, a copy of the original packing slip or invoice is required. If proper paperwork is missing, PROXXON Inc. will not issue a credit. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here. California Residents Prop 65 Information WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.