The unique grooves let these leads transmit more information through the rod tip than standard leads. Rather than a buoyant boom, the leads have a solid stem which gives a more accurate reading when fishing in weed. The swivel on the stem in positioned away from the lead so the float will always rise, even if it's covered in weed or debris. Each pack contains 1 x 3oz lead and 1 x 4oz lead.
Small fins and an aerodynamic body ensure the lead cast straight and true every time.