The Korda Big Grippa Swivel leads are perfect for fishing anywhere that you need more grip, such as marginal slopes, the sides of bars, rivers. 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 a distinct advantage as a lighter lead makes a smaller splash in the margins, or when fishing on fast flowing rivers.