2 inch Net Cups + Cloning Collar Inserts Combo 25 Pack for DIY Cloners (2 inch Black Pots + Black Inserts) 25 - 2 inch SUPER HEAVY DUTY Net Pots 25 BLACK Cloning Insert Collars - 48mm x 19mm (1.89" x 3/4"). Fits perfectly in 2" net pots, DIY Cloners and Clone Machines NON-TOXIC, Sterile, Soft material holds no water to help prevent stem rot New Improved Spoke Design features 8 slits & 1 hole to cushion tender cuttings Write Details on them and quadruple or quintuple the number of cuttings in the same space!