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.
Ferrite Choke Inductor Coil - Radial - 10uH to 100mH - Various Pack Sizes
10 x 1/2W 0.5W 0410 Axial Ferrite Choke Inductor Coil 1uH to 4.7mH (pack of 10)
Ferrite Choke Inductor Coil - Radial - 10uH to 100mH - UK Seller
5 Pack 100mH Ferrite Choke Inductor Coil - Radial - UK Seller
5 Pack 1mH Ferrite Choke Inductor Coil - Radial - UK Seller
5 x 1mH Radial Ferrite Choke Inductor