The 8" Throttle Box (Corner Box) is another great product ofÂ ColumbiaÂ that offers years of great performance. All billet construction with a threaded stainless steel ball, this Corner Box looks and operates seamlessly. The Throttle Box allows the corners to be quickly coated with your choice of angle head or applicator head. *Patent Pending
- Available in 7" and 8" sizes
- New spring tension allows for 50% easier push
- Hand made from U.S. billet aluminum and steel components
- Machined in state of the art facility in Canada
- Patent Pending
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