For years effects and animation techs have been asking for something just a little smaller than the 500 series and now it's available! The 375 series is based on 3/8th's inch diameter tube. Small enough to get just about anywhere yet very strong. All of the block styles you've been using for years are available in the 375 series; right angle blocks, parallel blocks, accessory mount blocks, linear and rotational blocks, linear movers and more. As with all other Berkey System the 375 series can be interfaced with all of the other series of components through the use of bushings. All Berkey System products are made in the USA and are covered by our Lifetime Warranty. See Terms and Conditions for details.