Drfeify Bicycle Crank Set - Widened Thickened Bike Crankset, Waterproof & Noise Reduction for Smooth Riding | Mountain Bike, Road Bike & BMX Accessories | Perfect for Commuting, Racing & Off-Road Cycling

Specification: Item Type: Bicycle Crank Material: Main Body Aluminum Alloy, Axial Chromium Molybdenum Steel Crank Size: Hole Diameter Approx. 170mm / 6.7in Crank Axis Size: Long Approx. 117mm / 4.6in,Outer Diameter Approx. 24mm / 1in Crank Axis Inner Diameter Thread Specification: M18 Thread Crank Compatible Single Disc Dual Disc: 104/64BCD Dimension of Dental Disc: Outer Diameter Approx. 143mm / 5.6in, Adjacent Aperture 74mm / 2.9in, Diagonal Aperture Approx. 104mm / 4in Number of Teeth of Tooth Disc: 34T Size of Central Shaft: Total Length Approx. 91.5mm / 3.6in , Inner Diameter Approx. 24mm / 0.9in , Outer Diameter Approx. 44.6mm / 1.8in Tooth Pattern Specification of Central Shaft: BC1.37 in-24T Tooth Pattern Outer Diameter of Central Shaft: Approx. 34mm / 1.3in Center Shaft Type: Threaded Application Range of the Central Shaft: Approx. 68-73mm / 2.7-2.9in Five Way, Built In Sealed Bearing, Smooth Rotation Total Length: Approx. 117mm / 4.6in Bearing Area: Approx. 98mm / 3.8in Package List: 1 x Right Foot Crank (Coupling Shaft) 1 x Left Foot Crank 1 x 34T Disc 2 x Crank Hole Cover 5 x Screw 5 x Nut 2 x Palin Middle Axle Pair Lock 1 x Center Shaft Sleeve 3 x Intermediate Shaft Washer Note: Please allow 0 to 2 cm error due to manual measurement. Thanks for your understanding.

HIGH STRENGTH: Made of high-strength aluminum alloy material, high strength, susceptibility and difficult to break, can further increase the stability of the crank and hollow shaft

EXQUISITE CRAFSMANSHIP: Bicycle crank is fine, distinguished, silk sensation, crank inside the crank can only be fixed with screws, no need for nut, greatly reduced vehicle load

STABLE AND FIRM: Crank group bearings have noise reduction performance, easy to maintain and lubricate, fine teeth threads and threaded lock enhanced lateral stability, not easy to take off, ensure chain stabilization

PROTECTION PERFORMANCE: Effective protected frames are not scratched, extend their wear life to improve your performance and experience

COMPATIBILITY: The nail hole is designed with an internal sink notch, which is compatible with its transfer plate and a double disc 104 / 64bcd. It is a suite of bicycle.