allow each hook 30 to be positioned intermediate adjacent hooks 28 of the front body member however in such a case the shanks of the hooks 30 would have an awkward configuration for the bottom yarn engaging surface of the blades and the bills to be properly disposed relatively to the blades and bills of the front module to avoid such an unconventional design and to provide additional support for the elongated rear hooks 30 the invention proposes that the body members 32 be formed with slots 84 disposed intermediate the hooks 28 and of a depth substantially equal to the shank 54 between the throat 58 and the step 60 thus each hook 30 is received within a respective slot 84 when the body members 32 and 34 are assembled the slot on one of the body member 32 may be open at that end for receiving the end hook of the member 34 and the slot is closed by the wall at the other end of the adjacent body member 32 with this construction the rear hooks 30 are not only positively secured within the body member 34 but are supported in the body member 32 thereby minimizing the amount of transverse deflection on these hooks and preventing excessive bending when engaged by their respective needles and knives numerous alterations of the structure herein disclosed will suggest themselves to those skilled in the art however it is to be understood that the present disclosure relates to the preferred embodiment of the invention which.