Product information: 100% brand new and high quality Bottom bracket remover: *Suitable for any 20-tooth spline bottom bracket, usually used in the chain of Suntour bicycles *Use with 24mm socket wrench or adjustable wrench *Removed multi-castle and other tower wheels from mountain bikes and road bikes *Colour: Black *Material: carbon steel *Size: Approximately. 28 x 27 x 27 mm *Inner diameter: Approximately. 19.6mm * Teeth: 12 *Shape: 6-pin screw shape Bicycle chain breaker: *Suitable for 8/9/10 speed ordinary bicycle chain, suitable for all ordinary bicycle chains *Small and compact chain tool, easy to carry *Double drive pins, easy to break the chain *Specially designed for removing and installing chain pins *Comfortable grip design *strong and sturdy *Material: Steel *Size: 8.5x8x2 cm Disassembly and repair tool for bicycle mountain crank puller: *Suitable for square cone crank set *Long ejector for removing chain links and cranks * Easy to install and use. Universal bicycle crank puller * Very suitable for any household bicycle mechanic *A must-have tool for outdoor riding *Practical and more convenient, help you get out of trouble quickly *You only need an adjustable wrench or 5/8 or 16 mm wrench, Instructions: 1. Remove the bolts on the crank arm 2. Screw the lower black part of the tool into the crank until it is tightened 3. Screw in and continue to tighten the silver piece of the tool until the crank starts to move *Size: 79 * 21 mm *Color: black + silver Bicycle bottom bracket removal tool: *Used to remove the bottom bracket of the bicycle *Using high-hardness carbon steel, nickel-plated surface treatment, very durable *Easy to carry and store *A must-have tool for bike lovers *Material: carbon steel *Color: Silver (as shown in the picture) *Size (D * H): 3 * 5 cm/1.2 * 2.0 inches * Teeth: 20 note: 1. For the sake of taking pictures, please allow slight chromatic aberration Package Included: 1 *Bottom bracket remover 1 * Bicycle chain breaker 1 *Disassembly and repair tool for bicycle mountain crank puller 1 *Bike bottom bracket removal tool 1 *Kafei wrench/three-in-one tool with hook Packing list : Bicycle maintenance tool X1