Single Worm Screws - work best when trying to clear a more solidified type of obstruction such as rags, fats, grease, silt or a severe root mass as these worms can be repeatedly wound into the...
Double Worm Screws - work best when the blockage is perhaps of a larger or looser nature as the twin prongs can be wound into the obstruction until they grip hold which enables the blockage of...
Single Worm Screws - work best when trying to clear a more solidified type of obstruction such as rags, fats, grease, silt or a severe root mass as these worms can be repeatedly wound into the...
