These elastic tie downs with hooks are ideal for holding a variety of vessels in place on the BenchRockerTM 2D (Cat # 31-201), BenchBlotterTM (Cat# 31-200), Mini BlotBoyTM (Cat# 34-204), Mini BioMixerTM (Cat# 31-300), BioMixerTM (Cat# 31-301) and BenchRockerTM 3D (Cat# 31-302).