(DIR) ..
 (BIN) Frame.step
 (BIN) Pawl.step
 (BIN) Spool holder bottom.step
 (BIN) Spool holder top.step
 (BIN) USB spool bottom cap.step
 (BIN) USB spool top cap.step
 (BIN) USB spool tube side A.step
 (BIN) USB spool tube side B.step
 (BIN) USB spool tube spacer.step