The Korda Big Grippa Swivel leads are perfect for fishing anywhere that you need more grip, such as rivers, on the sides of bars, marginal slopes or boating out at extreme range.
Korda has recorded that you can get the same grip with a 1oz Grippa as you can with a 2oz Swivel Pear lead meaning that you can get away with a smaller lead to do the same job. This is an advantage when fishing for barbel and chub on the rivers.
Also, a lighter lead makes a smaller splash, so we like using them for casting to gently sloping island margins where a round lead can roll down. The Grippa leads rom Korda have become massively popular on the continent where carping in wide fast flowing rivers is the norm and where you have to boat out baits massive distances.