Made of PP, with lid. With 96 holes for 0.2 ml PCR- tubes. Come in standard 8 x 12 micro- titre plate array. Are therefore excellent for 8 or 12 tube strips or for individual PCR- tubes. PCR- racks can be easily mounted over the 32 x 0.2 ml holes of PCR- workstation. By securing them with 4 clips, the racks can be removed or inserted easily when required. Autoclavable.