1/bag. 3/8 inch trade size. 1/2 inch knockout. BX. MC. Flex. Arm cable connector. Fits 1/2 inch knockout, for 14-2 to 10-3. Steel or aluminum AC and MCI cable. 10-2 to 12-2 MCI-A and 3/8 inch FMC. Dry location. UL listed. Made in India.