Medium: 880 lb tension limit. For 14-10 gauge wire, 15½ gauge barbed wire, single strand, field fence or fruit and vineyard trellising.
Large: 1,320 lb tension limit. For 7½-10 gauge smooth wire, brace wire and woven wire.
Ive used this for the past 15 years and recommend it. My new neighbor cleaned up some trees on the fenceline, which fell on the fence, and I immediately called Jeffers. best price and a great product. Thanks.