Evaporation flask clip(Black)，NS24/40, Adapted to 3L/5L Evaporating flask

500ml aluminum alloy bead bath block, with 500ml beads (18900513 + 18900512)

Optional generator 14mm x 130mm saw tooth, for 50ml tubes up to 250ml vessels

Heating block, used for 2mL tubes, 15 holes ( round bottom)