Thomas & Betts BFH-10-0 Electrical Hanger. PMA Conduit Support System 1-Piece Flexible NW10 Size Network Rail Mounting For Use With: PMAFLEX PMA Smart Line Conduit Specifications: 20 mm THK 1-Hole Polyamide 6 Black 24.5 mm H x 20.5 mm W x 20 mm D Dimensions -40 to 105 deg C. Additional Description: TB -BFH-10-0 CONDUIT SUPPORT PA6 NW10 BLK. Catalog Description: PMACLIP One-Piece Black System Support with Safety Lid Material - Polyamide 6 Fits to Conduit Size NW - 10 Metric - 12.