1993 T100 - 4x4 - 5sp

Gotta replace Rotor and CV axle. I'm looking at the main hub bolt right now and my manual is telling me I need that Special Service Tool, which is basicall a big Socket. The manual doesn't say what size it is, so I'm wondering what size and also if there's any way around not having one of these?

Thanks guy's, keep on Truckn'