These Wire bobbers offer the lightest in bite detection possible. 

Spring Thing-Made by Marion Lake Ice Rods from the perfect Alloy that provides a consistent and durable spring bobber. Torture tested to -20F and proven to withstand the elements. Available by itself or as a custom add-on and installed on your rod order ($15 total).

Ultra Light for 2-3mm tungsten jigs

Light for 3-5mm tungsten jigs