25mm-40mm Brass Bore Brush SetFeatures and Benefits: Durable Clean brake calipers, throttle bodies, tubes, fittings and much more! 3" overall length with 1/4" hex drive Twisted wire for increased cleaning function Made in the U.S.A. IPA8038 consists of 25mm, 30mm, and 35mm and 40mm twisted wire brass bore brush with 1/4 hex shank. These bore brushes can be attached to any 1/4 handle driver and used to remove dirt and debris from parts, components, engines, tools etc. The XL bore brushes are rare items and tremendously useful for today »s technician. WARNING: This product can expose you to chemicals, including Lead and lead compounds, known to the state of California to cause cancer or birth defects or other reproductive harm. For more information, vist - www.P65Warnings.ca.gov