... . Connecting Rod Specification:1) These connecting rods applied in the hedge trimmer gearbox.2) Material:1045 steel.3)Hardness:38-42HRC.4 ... blades, Hedge trimmer blades, lawn mower blades, Cutting filling machine blades, Golf course knife and blade, Customer-tailored stamping parts, Hedge trimmer gearbox. Motorized Hedge Trimmer connecting ...