Combs for pouring your own special gel types are available in two thicknesses (1.0 mm and 1.5 mm) and seven comb types (1 well, 2 well, 5 well, 10 well, 12 well, 15 well, and 2D well). These combs are for use when pouring your own special gel types and are available in two thicknesses (1.0 mm and 1.5 mm) and seven well formats (1 well, 2 well, 5 well, 10 well, 12 well, 15 well, and 2D well). They are compatible with our mini-size Empty Gel Cassettes of the same thickness (NC2010, 1.0 mm; NC2015, 1.5 mm).