marble run transport snail 152 mm 7 twists
Description
Marble Run Transportation Snail With 7 Twist For Fischertechnik And Other. Designed For 13Mm Marbles. The Inner Axis In The Figure 4.5 Mm In Diameter. My Prusa I3 Makes It Just A 4 Mm Diameter. Compatible With The 4Mm Axis Of Fischertechnik.
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