Which bead you want comes down to how it mounts on the hook.
Slotted
Seats on a jig bend — the fly rides point-up.
Countersunk
Takes a standard hook. The classic bead-head.
Cone head
Sits at the front of a streamer and pushes water.
Tungsten sinks about twice as fast as brass at the same size. Glass is for shine more than weight.
5/64" 2.0mm · 3/32" 2.3mm · 7/64" 2.8mm · 1/8" 3.3mm · 5/32" 3.8mm · 3/16" 4.6mm
