In 2020 rounding out the Annex line is the Annex Pro 24 model. Centered around a 21.75" top tube cruiser sized frame, the Pro 24 features the same spec found on the 20" Annex models. With 175mm 3 piece chromoly cranks and full size 24" 36 spoke alloy wheels, the Pro 24 is strong and versatile for riding at the BMX track or cruising through the neighborhood.