Aluminum Double barrel Crimp Sleeves 8 Shaped. Designed for line or cable to pass threw twice. Available in 1.5mm,1.7mm,2.0mm,2.3mm,2.8mm,3.1mm,3.3mm, and 3.5mm.The sizes are the ID of each Barrel of the crimp. Best to go a little bigger than the line or cable size. Cut line clean with sissors or mono cutters or line gets enlarged. Available in sets of 100 pieces or 500 pieces.