DIAMETER:2.0MM TO 8MM COMMON SIZE:2.5MM 3.0MM 3.2MM 3.5MM 4.0MM 4.5MM 4.65MM 4.7MM 5.0MM 6MM 8MM ,ANY SPECIAL SIZE CAN MAKE ALSO. These inner wires used for bus, truck, marine clutch cable use. THE RAW MATERIALS OF OUR PUSH INNER: OUTER: FLAT STAINLESS 304 WIRE. INSIDE: flexible type 1*19 , hard type 1+12 OR 1+9 INISIDE IS GALVANISED WIRE ROPE. MADE BY 70# STEEL.