- Prowheel A10BPP(13) crank arms specially designed for children's and youth bicycles - Constructed from 6061-T6 forged aluminum alloy, offering high strength and durability - 28T chainring with double black plastic guard, effectively protecting the chainring and teeth - 160 mm crank arm length, adapted for young users - Square tapered spindle interface for easy and secure installation - Includes bolts for quick and efficient assembly - Black finish, modern and lightweight design - Ideal for replacement or repair of crank arms on children's bicycles - Compatible with most junior and children's bikes - Provides greater safety and protection during daily use and sports activities