Overview Reviews Product Description Cooper BX4M Stud Fastener Diameter: 3/8 Inch for Flexible Conduit/Cable, B-Line. Product Videos Custom Field Size 3/8 Product Reviews Write a Review Write a Review × Cooper B-Line Cooper BX4M Stud Fastener Diameter: 3/8 Inch for Flexible Conduit/Cable, B-Line Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *