Callies Compstar stroker clearanced H-beam connecting rods. GM LS applications material 4340 forged steel, 6.125″ length, bushed .927″ I.D. small end width .960″. ARP 2000 7/16″cap screws, 2.100″ crank pin rod weight 618 grams and big end I.D. 2.225″ width .940″ Rated for 700 H.P. Please e-mail with questions.