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 ... almost the same as ANSI G7 roller chain. BL TypeBL Series leaf chains consist of link plates which ... is not used, so it is environmentally safe. Leaf chain(Bl series) LH2422, LH2423, LH2434, LH2444, LH2488, LH2466, LH2823 ...