Description Wing-Nut® 454® Wire Connectors "Big Blue" (50/JR) Largest range in the Industry - from 2 #18 to up 4 #10 High-leverage, contoured wing provides superior torque on every twist Wide range, live-action spring handles small combinations and expands to accommodate large combinations as you need it Copolymer shell expands for smooth, progressive tightening providing dependable connections Removable for repeat usage on same size or larger combinations