Double ball race ways reinforced by wear-resistant tempered steel. The steel bracket has a moderate thickness, relatively bright thanks to the Nickel plating. The caster load capacity is suitable for light and medium industries.

The bracket off Gia Cuong Thinh's K Series has 5.5 mm thickness steel and Zinc plate to prevent rust and corrosion. The PU is mold on Steel core is quite sturdy, good wear and tear resistant. Do note that this one has Steel hubs: small but very effective in dealing with dust intrusion.