arm 302 a the base 300 and the third arm 306 a a center channel 316 a is formed by the third arm 306 a the base 300 and the fourth arm 308 a a second channel 314 a is formed by the fourth arm 308 a the base 300 and the second arm 304 a a fourth channel 314 b is formed by the second arm 304 b the base 300 and the fourth arm 308 b a center channel 316 b is formed by the third arm 306 b the base 300 and the fourth arm 308 b a sixth channel 312 b is formed by the first arm 302 b the base 300 and the third arm 306 b 0019 fig3 is an illustration of a cap connector 40 associated with the present invention the cap connector 40 comprises a base 400 and a plurality of arms extending from the base 400 a first arm 402 and a second arm 404 are located at the extremities of the base 400 between the first arm 402 and the second arm 404 are a third arm 406 and fourth arm 408 a first channel 412 is formed by the first arm 402 the base 400 and the third arm 406 a second channel 414 is formed by the second arm 404 the base 400 and the fourth arm 408 a center channel 416 is formed by the third arm 406 the base 400 and the fourth arm 408 0020 fig4 is a partial illustration showing use of the angle connector 10 the straight connector 30 and the cap connector.