Grodan 1.5" inch Rockwool / Stonewool Cubes (Mini Blocks)  PLUS  ROOTECH Cloning Gel Includes (45) Grodan 1.5 inch mini rockwool cloning blocks! Also includes (1) jar of Rootech Cloning Gel (.25oz jar)! Perfect combination for cloning your cuttings and plants! Easy to use, most cuttings take root in 5-14 days! Exclusive Cloning Combo Pack from PowerGrow Systems