Check the listing for details. Promax Brake Post Extender - Black. Color: Black, Condition: New. Listed at 29.99 USD. The Promax BE-1 brake post extenders are the perfect solution for those needing that extra bit of brake pad adjustment without switching frame sizes. CNC-machined from 6061-T6 aluminum, BE-1 extenders easily mount to any frame’s existing cantilever brake bosses and provide an additional 16 mm of brake arm positioning.Provides an additional 16mm of brake arm positioning. CNC-machined from 6061-T6 aluminum. 1.15oz / 32grams including hardware (bolts). Bolt Size - M10. All necessary hardware is included. SHIPS TODAY! Order before 1:30PM EST, M - F, and this item ships the same day! HAVE A QUESTION?Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to! Contact Us! (9-5 Mon-Fri, 12-4 Sat & Sun EST) Chat With Us