Lego Writing System Safari Pen Pack The Lego writing system is the first of its kind. The only pen you connect and build. Mix and match the colorful beads elements to create fun, new designs every time you write. This safari pen pack includes: a create your own pen, backpack clip, 24 bead elements, and a sturdy case for storage and travel. The backpack clip can be attached to any handle or strap or can be used as a keychain. The pen has a soft grip and uses a replaceable ink cartridge. The grip on the pen is black. The pen has blue ink. Just turn the ring to write. The bead elements have safari things on them. The bead elements are round and square. The bead elements are interchangeable with bead elements from other Lego pen packs.