We have chosen this product to be able to count on a good chain breaker to always take with us, even when we are around for longer trips. Conventional ones are very heavy or not enough for heavy workshop use. So, we decided to make an aeronautical grade aluminum one. Its lightness will surprise you! This durable, foldable chain breaker fits perfectly into a trail bag or toolbox and will speed up your work. Thanks to the high hardness steel thrust bead, this chain breaker is definitely the model you were looking for! Lightweight aluminum design. High hardness pushing part. Compact and durable design. Suitable for chains from #420 to #520.