Twice as heavy as equivalent brass beads, without the environmental problems of lead. Use for streamers or tube flies. 3 sizes and 4 metal finishes, 10 per package. Large cones are 5.0 mm dia. and 5.0 mm long; medium are 4.5 mm dia. and 4.5 mm long; small are 4.5 mm dia. and 3.7 mm long.