... Bolts, Nuts, Bits of Wire, Nails and other casual impurities from freeflowing materials, like gravel, corn, sugar, plastic ... conveyor belt, trough, pipeline, feed plate, above or the end of the conveyor belt, so ... cleaning and assembling.3.Surface material is 304 or 316L stainless steel ,no pollution to materials.4 ... and extra parts, such as hinge, handle, or mounting hole can be custom made.4. Magnetic ...