You can buy them and I did. However, the inside diameter is apperently slightly smaller than the outside diameter of the Iglide high performance bushes. Seems easy enough to use a reamer for the internal widening of the tube. But the tube is about 550mm long. So, a seemingly easy job turned out to become an akward job as it is only possible (for me and my tools) to use the reamer on short lenghs of tube. At the end I made the tube out of 9 shorter parts with the extra challenge to maintain a straight composite tube or how to make a seemingly simple work a complicated job 😦
Fibreglass pivot tube for rudder case.