Lead Free Leader,
 
Easy to splice (with no ultra fine needles required), allowing you to create leaders to your size & lead arrangement preferences.
A supple yet heavy material making it fast sinking, but allowing it to adhere to the contours of the substrate your fishing over & its dull colouration makes it very easy to blend in with its surroundings.
 
Comes in a 35lb breaking strain & supplied in 10m spools
Available in both Green & Brown