BUILD3 for kids. Set of 2 The shaft is 7.3" and is designed specifically for 7.25" and 7.375" decks. (Can also be used for 7.125 and 7.5) Both the shaft and kingpin are lightweight models of titanium. (1 piece: approx. 9.5 oz (266 g). Please compare with other companies. Light weight is very important to practice olly. The height is equivalent to VENTURE, Thunder, and BUILD Lo, but for children, we think they feel the MID equivalent to your child. Equipped with a high spring core bush. Feels good when stepped on. Treflip tips are easy to grip and difficult to bite ★Note 1★ Since it uses a special soft bushing for kids, it will be bite as soon as an adult ride, so please be careful when trying it. ★Note 2★ We have confirmed that children ages 7, 9, and 12 years old have not been bite but the bite is very dangerous, so please carefully step on before gliding and make sure that it does not bite before gliding it. We are not responsible for any accidents or other reasons associated with this product. Hanger material is A356-T6 equivalent to India. Shafts are prevailed.