Attributes . The B-CAP Wire Connector gets you in those hard-to reach spots comfortably, especially when you?re retrofitting or updating. Slim, classic fins and an expanding interior spring give the B-CAP a secure grip with extra leverage, making it the most compact connector on the market for up to 5 #12 (Red Model B2).The unique, space-saving profile of the B-CAP makes it perfect for retrofit work and shallow boxes.The B-CAP also features a tough, flame-retardant shell that withstands environmental extremes with a de . Names