Duraflex National Molding Buckles are the leading brand since many years. BACH is using Duraflex nylon buckles made in Italy and USA or by the former Korean Duraflex licensee Woojin. We try to not go for optics only but to choose the strongest designs available. This is not always an easy task and may involve compromising, changing technical features and at times buying designs from other brands as well. Whether you prefer acetal (stronger under very hot conditions) or nylon (does usually not break) is a matter of individual preference. We use mostly nylon buckles.