These are an excellent low cost and convenient alternative to winding your own using toroid's for your RF projects and a superior solution to axial ferrite inductors.
8x10mm Radial Ferrite Choke Inductor Coil 1uH to 10mH Power Inductor Inductance
Ferrite Choke Inductor Coil - Radial - 10uH to 100mH - Various Pack Sizes
Ferrite Choke Inductor Coil - Radial - 10uH to 100mH - UK Seller
5 Pack 100mH Ferrite Choke Inductor Coil - Radial - UK Seller
5 x 100uH Radial Ferrite Choke Inductor
5 x 470uH Radial Ferrite Choke Inductor