: Roller Conveyor Belt- v belt roller conveyor ,Drop-in replacement on live roller conveyors; runs in V- and round pulleys Gates 490J6 Micro-V Belt, J Section, 490J Size, 49" Length, 4/7" Width, 6 Rib by GatesBelt-over Conveyors | HytrolHytrol's belt-over conveyors provide material handling solutions for products that do not convey well on roller or drag chain conveyors.