Daiichi Seikatsu Knot Assist 20 ◆LINE: No. 0.3-6 Leader: 3-70 lbs; Size: 4.1 x 2.2 x 1.5 inches (105 x 57 x 39 mm) (when stored), Weight: 1.8 oz (50 g). Sure! Speedy! braid knot assist tool Switchable corrugated line hook and offset arm allow you to tie PE line and leader together with FG knots for easy, secure and speedy. The body is made of high-strength, ultra-lightweight, rust-resistant CFRP (20% carbon fiber reinforced plastic) that closes the arm for compact storage when carrying.