5-Piece Bicycle Repair Kit – Professional-Grade Chain Breaker, Crank Puller, Cassette Tool, & Flywheel Extractor Set (Chrome Vanadium Steel)

Technical Specifications Tools Included: Chain breaker (6-12s) Crank puller (22/24/30mm) Cassette lockring tool (16-notch) Bottom bracket wrench (BSA/PF30) French valve core remover Material: Forged S2 steel with nitride finish Package Includes 1× Chain Breaker 1× Crank Puller 1× Cassette Tool 1× Bottom Bracket Wrench 1× Valve Core Tool Why Mechanics Choose This Repair Kit? ✅ Tour-Proven: Used by WorldTour cycling teams for roadside repairs ✅ Precision Calibration: Laser-verified tool dimensions (±0.005mm) ✅ Global Compliance: Meets EU Machinery Directive 2006/42/EC Engineered for Workshop & Trailside Mastery! Pro Tips ① Heat stubborn BBs with a torch – S2 steel withstands 400°C ② Store tools dry to preserve nitride coating ③ Use breaker's alignment notch for perfect chain rivet placement • Industrial-Strength Durability Chrome vanadium steel construction hardened to 58-60 HRC – 3x lifespan vs. standard carbon steel tools (tested to ASTM F2328). Anti-corrosion nitride coating withstands salt/mud exposure – survives 500+ repair cycles without rust. • CNC-Precision Engineering Laser-cut splines + 0.01mm tolerance ensure perfect engagement with Shimano/SRAM 8-12s cassettes and bottom brackets. Dual-drive chain breaker handles 6-12 speed chains without pin deformation (CN-STARS certified). • Universal Compatibility Interchangeable 16-notch design fits BB30, BSA, PF30, and HollowTech II cranksets – eliminates need for multiple tools. Dual-sided cassette tool works with Shimano HG/SunRace/IRD freewheels (32T-11T) and lockrings. • Ergonomic Efficiency Overmolded TPR handles absorb 70% vibration – reduces hand fatigue during stubborn bolt removal. Knurled grip surfaces + anti-slip geometry ensure control in greasy/wet conditions. • Pro Workshop Organization Modular storage case with labeled slots + magnetic retention – tools snap into place during mobile repairs. Lifetime tool replacement guarantee – free resharpening/recoating service available.