A rod holder for boats, canoes, jetties. A 25mm ball allows adjustment to a wide variety of angles. The first mount is set to + or - horizontal. The next mount is for + or - 45deg. I have updated v4 of the rod holder which includes gussets to the ball for added strength.Recommended to print as a solid in ABS. I had to set it at 30 deg and corner to corner to fit it on the build plate. Use 6mm s/s bolt and nut for clamps. The removeable section of the ball clamp is printed in situ and broken out after printing.