For Bass/Salt Flies. Glass rattles are the loudest. Attach rattle top or bottom of the hook-shank with firm thread wraps. Then use Zap-A-Gap. Tye the fly right over the top of the rattle. Also, try one in the belly of a “zonker”. Bass and redfish are crazy for ’em. SIZES: MINI (3mm dia x 3/4″ long), STANDARD (4mm dia x 3/4″ long), LARGE(5mm dia x 7/8″ long) (10-PAK)