The Aesculap GT520 Econom shearing blade set is a widely serrated, 3 mm cutter-and-comb combination. It pairs a 17-tooth GT503 upper cutter with an 18-tooth GT504 lower comb. Aesculap lists this combination for dirty cattle, including tail and udder work, and for fine-wool sheep.

The tooth counts and component references identify the exact setup. GT520 supplies both working blades as a set, making it straightforward to select the manufacturer's documented pairing. Use the GT503 and GT504 numbers when identifying an individual component for replacement or servicing.

The blades are manufactured from carbon steel and have a wear-resistant surface coating. CNC machining controls the component geometry, while vacuum hardening establishes their hardness. Their cutting surfaces can be professionally reground when the edges become dull, so sharpening forms part of the set's serviceable design.

Before fitting the pair, remove hair and dirt from the blades and clipping head. Follow the machine instructions for positioning the cutter and comb and setting their working pressure. Apply clipper oil before and during clipping, then keep the blades dry and oiled in storage. The 17/18 tooth pairing and specified 3 mm cut distinguish GT520 from the other Econom blade combinations.