• This stout little indoor trainer block is compatible with 700C and 29er wheels ranging from 23c up to 2.3`
• Webbed rubber feet prevent the trainer block from moving during heavy use
• 3 height choices work with a wide variety of different trainer styles and brands
• Durable and lightweight composite construction

Specifications:

• Type:Riser Block
• Fits:
• Resistance:Composite
• Material:Composite
• Color:Blue
• Wheel Compatibility:700C/29er