Product name: Ferrite Cores Ring Clip-On RFI EMI Noise Suppression Filter Cable Clip Color:Grey Size : 0.14 inch/ 3.5 mm (inner diameter): about 0.98 x 0.51 inch/ 25 mm x 13 mm (outer size) 0.20 inch/ 5 mm: about 0.98 x 0.51 inch/ 25 mm x 13 mm 0.28 inch/ 7 mm: about 1.18 x 0.63 inch/ 30 mm x 16 mm 0.35 inch/ 9 mm: about 1.38 x 0.75 inch/ 35 mm x 19 mm 0.51 inch/ 13 mm: about 1.42 x 0.94 inch/ 36 mm x 24 mm Specification: 3.5MM inner diameter: suitable for 3.5-4.5mm cables; 5MM inner diameter: suitable for 5.0-6.5mm cables; 7MM inner diameter: suitable for 7.0-8.5mm cables; 9MM inner diameter: suitable for 9mm cables; 13MM inner diameter: suitable for 10.5-12.5mm cables; Packing included: 15 Pcs-13 mm inner diameter