ENVE Composites Seatpost 25mm Offset 400x30.9mm Black CheckoutSpec= Apex Chainring bolts: 104 x 34T

Chainring bolts:  104 x 34T useS 6mm bolts

While the smaller woom 1 is designed for kid’s as young as 18 months

com/chainfit for the latest compatibility information

Spoke Interface J-Bend Skewer Included No Defined Color Black Rear Axle 12mm Thru x 148mm Hub Drilling 32 Bearing Type Sealed Cartridge Color Black Hub/Brake Compatibility 6-Bolt Disc Cassette Body Type Shimano Micro Spline

ENVE Composites Seatpost 25mm Offset 400x30.9mm Black CheckoutSpec= Apex Chainring bolts: 104 x 34TENVE Composites Seatpost 25mm Offset 400x30. 9mm Black. ENVE Composites SeatpostsMonocoque carbon construction 0 27 degree adjustability TECH SPECS Length 400 Color Black Diameter 30. 9 Material Carbon Defined Color Black Clamp Style Standard Rails Offset (mm) 25