Grodan A-OK 25/40 10/10 Cubes, 1" x 1", 30 sheets of 200The renewed plugs result in a maximum number of useable and homogeneous seedlings. Both form and strength have been greatly improved for good machine and manual processing. Whether sowing or transplanting, the new plug is the solution to achieving a homogeneous sowing result. Improved homogeneity Optimum robustness and flexibility Ideal air water balance Consistent shape of the seed hole Identically shaped plugs Root development through the entire plug