■ Fishing Parts: Not available for immediate delivery ■ ■ Product Introduction This is a set of magnets required when using a microcast spool (shallow groove) for Shimano BFS reels. Avail microcast spools have shallower grooves than the original spools, making it difficult for the original magnets to provide sufficient braking. By using φ4 x 2mm auxiliary magnets stacked on the original magnets, fine adjustments to the braking force become possible. If you feel that the braking force is insufficient after replacing with an Avail spool, please consider this product.