Summary Please feel free to donate through Paypal to [email protected] and I will keep the designs coming. Spool holder made for octave spools of different sizes. I used ball bearings that are 7/8" OD x 1/4" ID x 1/4" thick. Use a wood 1/4" dowel or 1/4" allthread as an axle. Has removable feet for different diameter spools. Added a shaft clip to use if you are using a 1/4" dowel Instructions Bearings press in easily.