Spool Roller 2

Derivative slightly adapted for reprapworld 1kg spool (don't know if from repraper or another asian manufacturer).
Which is 160mm diam. 90mm large (side to side, external)

Redrawn in Sketchup for 624 bearings and use few plastic (total volume 17,19 cm³) :)

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added one for a small spool 205mm diam. 45mm side to side internally (or 53ext.) I got from mendel-parts
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and another for 55mm int. side to side (salvaged from stratasys dimension cartridges)