The Proto PROSBV1214 Double Box Ratcheting Spline Wrench features a patented spline design that delivers twice the gripping power compared to standard box end wrenches. Teeth machined in a reverse-box pattern allow use in confined spaces, while the reversible ratcheting action works in both directions for added versatility.
Constructed from tough alloy steel, this 3/8 x 7/16 wrench is built to withstand demanding jobsite conditions. Its compact, double-box design makes it an essential tool for MRO professionals and tradespeople working in tight or hard-to-reach areas.