In the first two photographs below, I have used a Needle Tube Fly dressed on a 15mm long needle tube, diameter 1.5mm, 12lb Maxima Chameleon nylon and a size 8 Gamakatsu F31 hook, with a knot guard made using clear heat-shrink tubing size 1.2/0.6mm
For the small tubes, we use a standard leadhead varying in size from 1/16th ounce to a ounce, standard is a 1/8th ounce version
To save money some manufacturers use cheap quality internal mechanisms, or materials that just dont cut it
Eupheng fishing silicone skirts are made of 100% silicone by a special patented process, soft and flexible, high strength and strong wear resistance
Its great for overnights or dense, weighty loads