The GSC175 is an outer sleeve connector made of tin-plated soft bronze for a shielded cable grounding system made of 2 cylindrical sleeves, for solderless crimp connection. Length 1/4 Inch/6.4mm, inner diameter .175 Inches/4.45mm, outer diameter .215 Inches/5.46mm. The sleeve is color-coded according to their size. The color code is blue.