1/8 for thin synthetic tracks
3/16 (5mm) for synthetic tracks
1/4 (7mm) most popular for synthetic tracks
3/8 (9mm) for thicker urethane tracks
1/2 for non-synthetic tracks
5/8 for non-synt...
1/8 for thin synthetic tracks
3/16 (5mm) for synthetic tracks
1/4 (7mm) most popular for synthetic tracks
3/8 (9mm) for thicker urethane tracks
1/2 for non-synthetic tracks
5/8 for non-synthetic tracks