John Dewsbury takes its name from the man who developed the first Kangaroo bits in 1831 in Walsall, a major UK saddlery center in the English West Midlands. The company pursues Dewsburys policy of using only the finest and safest materials to produce bits that, it maintains, are of a higher standard and quality than anything else available. As much as 70% of each bit is copper, a metal that responds quickly to heat and offers comfort for the horse. According to John Dewsburys Alixe Etherington, the high copper content means the horse salivates more freely and accepts the bit; the top line relaxes, and the horse readily moves forward. The remaining 30% of the bit is nickel alloy, which provides strength and longevity. It also ensures the bit retains an attractive silver color that looks even to a tack judge at a competition like stainless steel. Every Kangaroo bit carries a worldwide lifetime guarantee and product liability insurance.