Cannondale
HollowGram Self-Extracting Crank Arm (2021)

The HollowGram crankset, paired with the any SpideRing, is an impressive upgrade for any mountain or road bike.

*Updated crank arm design now includes self extracting bolt*

• Retrofittable on all all SpideRings and HollowGram chainsets
• Self extracting bolts for removal
• Compatible with reflective HG crank boots
• 172g/arm including hardware - among the lightest alloy cranks on the market
• Tool-free removal
• incredibly high stiffness to weight ratio