ITEM NAME:100Pcs Copper Double Fishing Tube Barrel Sleeves Tube Connector 2mm Bore .like-pro-float .like-pro-price-both{clear: both;.6 sizes mini copper double barrel leader sleeves. 100 Pieces Double Barrel Copper Crimp Sleeves. Material: Copper. Great for mono and wire leader. Non-abrasive finish. High strength, corrosion resistant and burr-free.