You may cast 3g. Ultra light weight 3mm deep super shallow tuning spool for Shimano 17Scorpion BFS, 21 SLX BFS, 21Curado BFS. CNC machined ESD extra strong duralumin spool with titanium center shaft. 32mm dia. 4.97g. Stock spool weights are Scorpion BFS spool 8.9g, SLX BFS 9.2g. Not for 17Conquest BFS or 16Aldebaran BFS.
Please insert pinion peek bar accompanied to pinion gear.