Grodan is a type of rockwool, it is a sterile and very versatile media with an excellent air to water ratio for optimal plant performance.  Grodan is very popular with tomato, Capsicum, Lettuce, Herb and other crop growers as it leaves no "gritty" bits in your salad.  These Kiem Plug trays are suitable for sowing seeds and then transferring to the larger Grodan cubes.  There are 240 plugs in each tray and there are 12 trays per carton.  Each has a hole for seed placement. 

The Grodan Kiem Plug Trays can be placed on an Ebb and Flow propagation table for high density propagation.  After germination they can then be transplanted directly into an NFT channel, moved on into the larger cube for growing on, or placed into a growpot and surrounded with media such as pumice, scoria, or vermiculite. 

A tray of Grodan Kiem Plugs have 240 plugs.  There are 12 Kiem Plug trays carton.