Descriptions: 1. Chain Breaker: Easy to remove link, easy to re-install link. Even comes with a spare pin and hook for chain. Just take your time, line everything up properly and push the pin out and remove link. Again take your time putting the chain back together, line it all up and push link pin back in. 2. Bracket Remover:The teeth on this tool are a perfect mate for the bottom bracket and since there are so many teeth you really do not have to worry about the tool slipping and rounding off the teeth. 3. Freewheel Cassette Remover: It is very simple to use. Remove the wheel from bike and remove the quick release skewer if equipped. Place the FCR into the splines of the freewheel and loosen while holding the tire/wheel combination. No "chain whip" tool is need for use with the freewheel remover. 4. Crank Puller Remover:Bicycle Cycle Crank Puller Bike Tool.Everything you need to pull a crank arm.This tool managed to strip out your crank without getting its own threads stripped out at all. 5. Quality assurance,Bicycle Repair Tool Kit can satify your needs when your bicycle get in trouble. Features: Product type: bicycle repair kit Tools: Chain Breaker/Bracket Remover/Freewheel Cassette Remover/Crank Puller Remover  Suit for: Bike  1.Bottom Bracket Remover: To remove multiple-freewheels and other tower wheels of mountain bikes and road bikes Color: black Material: carbon steel Size: about 28 x 27 x 27 mm Inner diameter: about 19.6 mm Teeth: 12 teeth Shape: 6-pin screw shaped 2.Bike Chain Breaker Model: SC-139D chain cutter/breaker Material: Steel Size: 8.5x8x2 cm Weight: 131g Fits the following : Common bicycle chains of 8/9/10 speed, Works for all common bicycle chains.  3.Bicycle Mountain Crank Puller Removal Repair Tool Item size: 79*21mm Net weight: 123g Packaging weight: 132g Color: Black&silvery 4.Bicycle bottom bracket remove tool Material: Carbon steel Color: Silver Size: 3 * 5cm / 1.2 * 2.0in (D * H) Weight: 104g / 3.7oz Include: 1 x Bicycle Chain Breaker 1 x Bracket Remover 1 x Freewheel Remover 1 x Crank Puller Remover