YPO Blue Interlocking Base Ten Pack, Large
YPO interlocking base ten range, made from durable plastic and all coloured blue.
Set includes 600 x unit cubes, 200 x ten rods, 20 x hundreds flats, 3 x thousand blocks.
Set includes 600 x unit cubes, 200 x ten rods, 20 x hundreds flats, 3 x thousand blocks.