This 1" x 4-1/2" blood tube container is large enough to hold up to one 10ml tube. There is also enough room left over to hold the same tube wrapped in a KCP205 tube protector pad. Simply wrap tube, insert it into the container and then cap with the plug insert. 100 per pkg.
For more detail: http://www.sirchie.com/products/physiological-specimen-dna-collection/blood-collection-tubes-accessories/blood-tube-container-and-plug-insert-set-of-100.html#.V0Wc4jV97yF