Fused silica rollers are key components of glass horizontal tempering furnace for glass support and transmission. The fused silica rollers have excellent features such as high density and strength, no deformation at high temperature, wear resistant, excellent thermal shock resistance, long service life etc. Smooth and fine surface, little T.I.R. and high processing precision assures with no harm to the glass surface. Special design and assembly to resolve the problem of end-caps loosing absolutely.