#4 Round Reed Combo: Two Round Reed #4 coils on Clearance. Great quality. One measures 2.75mm, and one measures 2.5mm wide. Bundle and save. Only two coils are available, so hurry! The price is for both coils. Round Reed is made from the inner core of Rattan. It is a very pliable material. It should be soaked in water and installed wet. You'll get 2 coils in this combo pack.