The Seedburo Brass Nobbe Trier is used for sampling free-flowing, small seeded crops in bags or penetrable containers. It is ideal for clovers, timothy, brassicas, fine grasses such as bluegrass, and small vegetable seeds. It is inserted horizontally into the container and the sample pours out of the open end. Seedburo's Nobbe trier available in a 1/2" or 3/4" diameter version; 20" or 30" overall length, one opening starts 2-3/8" from the tip and is 2-1/2" long. Available in Brass or Stainless Steel.