Base 10 assortment Different kinds of blank wooden base 10 material. Contents: wooden box with transparent lid (32 x 21.5 x 3.5 cm) 100 blank wooden units of 1 cm3 20 blank wooden longs of 10 cm3 2 blank wooden flats of 100 cm3 This item will be sent from Nienhuis, please see our Delivery Page for details. Any additional postage charge will be calculated in the checkout as Nienhuis Delivery (NL). This is an educational product and is only to be used under the supervision of professional trained adults in a school environment.