To enhance the strength of a wheel of a caster, and to improve the appearance of the wheel by preventing the generation of a shrinkage cavity in the wheel.

In a caster 10 with shafts 15 and 15 integrated with right and left wheels 11 and 11 rotatably and loosely fitted to a bearing 8 of a caster body 2, bodies 12 and 12 of the wheels 11 and 11 have truncated conical projecting parts 14 and 14 projecting toward the shafts 15 and 15 side at centers of the bodies 12 and 12, and coupled with the shafts 15 and 15 via the projecting parts 14 and 14.