Upgrade your electrical installations with the Sigma Engineered Solutions ProConnex C-570 Double Snap Lock AC/MC Connector, now available in a convenient 25-pack. This connector revolutionizes installation by terminating AC, MC, or FMC/RWFMC cables to a 1/2-inch knockout without the need for tools, thanks to its innovative Double Snap Lock design. With snap-in cable capability and no locknut required, installation is faster and easier than ever before. Compatible with aluminum or steel 14/2 to 10/3 AC and MC cables, as well as 3/8-inch FMC/RWFMC, it offers versatility for various wiring applications. Constructed from durable zinc die-cast material with an insulated throat, this connector provides excellent wire protection. With cULus listings, this product meets safety standards and ensures peace of mind.