Park Tool HMR-4 Steel and Nylon Head Shop Hammer MFPN=61649 Varied thickness for superior damping

Varied thickness for superior damping

With its Multi Position Design the GameChanger redefines aerodynamics

25 Tubeless Folding Black MaxxSpeed EXO E-25

Tooth Count 38 Round or Oval Round Drivetrain Speeds 12 Drivetrain Speeds 11 Drivetrain Speeds 10 Direct Mount Type Direct Mount SRAM Defined Color Black Ring Position/Type Single Ring Position/Type Chain Retaining Single Ring Offset 3 Chainring BCD Sram Direct Mount Color Black Material Aluminum Material Aluminum Chainline/Hub Compatibility 141/148 Boost Hubs

Park Tool HMR-4 Steel and Nylon Head Shop Hammer MFPN=61649 Varied thickness for superior dampingPark Tool HMR 4 Steel and Nylon Head Shop Hammer. Designed for bicycle work HMR Hammers feature a fiberglass shaft a soft touch grip and a dual head.