BL serious precision leaf chains 1.BL serious leaf chain 2.Chain & Sprocket ... 3.Feature:high speed,long life,stocks 4.NBR Leaf Chain BL ... serious precision leaf chains Leaf Chain is the most ... not used, so it is environmentally safe. Leaf chain(Bl series) LH2422, LH2423, LH2434, LH2444, LH2488, LH2466, ...