DX Engineering Ferrite Cable Bead Toroid Pack model DXE-CB31-500-10 is the perfect mix-31 item for HF and VHF RF suppression and for RF choking on cables under 0.500 in. diameter. They fit over similar sized unterminated coaxial cable types such as RG-8U, RG-213, LMR-400 and DXE-400MAX as well as many power supply cables, mobile, computer, and large power wires and control cables.Also excellent for winding high performance RF chokes with smaller gauge wires, these 1.125 in. long toroid beads are very similar to medium split snap-on beads of the same size, but without the split. So, plan ahead and install DXE-CB31-500-10 toroid beads onto your cables before terminating them with connectors, and get more ferrite and more RF choking for the money.