Suitable for most 48-well plates on the market; made entirely of aluminum alloy, an upgraded version, more sturdy and durable; this product consists of 7 specially designed elongated magnets, with a protruding height of 1mm; optimal working volume: 1-2000ul; magnetic beads are attracted to the upper side of the bottom of the 48-well deep-well plate; recommended 48-well plate: this magnetic rack is suitable for most 48-well plates on the market, recommended JET or Biorad 48-well plates.