The RCV Performance Solid Slip Spline is lab tested to 6500 FT-LBS of torque strength. It has the same features as the tubular spline with higher torque capacity and lower cost. It is an involute spline which gives you a backlash free fit and is easily balanced. 12" of travel standard (More travel on request) Limited only by the length of your tube. Tube bored to fit weld yoke for 2.5" X .083" Lifetime warranty against breakage!