.Made of high hardness carbon steel,Some parts of the tool surface plated with nickel,very durable.
.The Bicycle Mountain Crank Puller Suitable for square tapered crank sets, for removing chain-rings and crank.
.The Bottom Bracket Remover to remove multiple-freewheels and other tower wheels of mountain bikes and road bikes.
.The Bike Chain Breaker used to remove and install chain pins or other repair work,it can works for all common bicycle chains.
.The item include 4psc bike repair tools,Bottom Bracket Remover,Chain Breaker, Crank Puller Removal,Bottom bracket remove tool, as the picture showns.