1. If you have a reel with inner diameter of 50 mm you need to print: Base flange - 1 Spacer 8.5x11x8 - 1 Cone center - 2 Hand knob - 1 M8 x 150 mm bolt - 1 8 x 16 x 5 mm bearing - 2 (to press fit to cone center) 2. If you have a narrow reel with inner diameter from 60 to 70 mm, you need Base flange - 1 Spacer 8.5x11x8 - 1 Cone center large - 2 Hand knob - 1 spacer - 1 M8 x 150 mm bolt - 1 8 x 16 x 5 mm bearing - 2 (to press fit to cone center)