The MTD-300W and 600W are 12" long and 24" long.

These are self-weighted 2" diameter tubes with a rubber membrane wrapped around the outside.

The MTD-300W and 600W come with 2 separate barbs which must be glued in place. Use regular PVC glue.

The barb sizes include a 2 section barb with 5/16" and 3/8" size and a 1/2" barb size.