The Benchmark Scientific BSWPCR2 Block is designed for 2- and 4-block models from the BSH1000 and BSH5000 MyBlock series of digital dry baths. The block can hold a PCR plate with 96 wells.The Benchmark Scientific BSWPCR2 heating block can fit a PCR plate with 96 0.2ml wells and can be skirted or non-skirted. This fits for the 2 or 4-block dry bath only.