... attachments: roller link, pin link, spring lip and connecting link Connecting parts for chains: connecting link ... (B), 40A(B) 48A(B) Single row, double row and Tri- rowMaterial16Mn,40MnSurface-finishingSandblasting, Dull polish, Galvanized, ... blackenHeat treatment:High frenquency quenching and CarburizationPackaging:Blister card, Poly bag,Certification1000 Sets3 DeliveryDelivery ...