Item description from the seller

Twist Type Wire Connector Cable Nuts AWG 18-10 Winged UL Listed Yellow 500 pcs.

• Purpose: homeowner or engineer who does the project of home theater, or used for HVAC, lamps, audio, speaker wire, stereo wiring, automotive, marine wiring, household wiring, and any type of electric work
• Features: hold wires firmly and durable, reusable,color-coded simply separate hundred of wire combinations, no need for pre-twisting wire, soldering, or electrical tape, no tools necessary
• Package:18-10 gauge double wing wire swivel connectors, yellow color, 10 bags in total, 500pcs in each polybag.
• Details: plastic material, UL/CSA certified

Specification:

• Yellow Wire Connectors.Wire Twist Connectors, Screw Nuts Connectors.Winged Nut. Condition is "New". Shipped with USPS First Class.