IZZY's #14 – #10 stranded one-hole long barrel copper compression lug, with inspection window. One-hole, 1/4 in hole. For #14 – #10 stranded copper wire. Wire strip length: 3/4 in manufactured with high conductivity seamless copper tube, electro-tin plated. UL Listed for applications up to 35 kV, 90 Deg. C UL temperature rating. CSA certified.