Transport and present your work with this Machina Screwpost Binder from Pina Zangaro. Machina is lightweight, durable and attention-getting – ideal qualities for an art portfolio or an unforgettable marketing piece. Made by hand in the USA of recycled aluminum that is anodized for scratch-resistance, these metal binders are guaranteed to hold up to lots of abuse and look great while doing it. The screwpost design allows for easy adding/subtracting of inserts. The portfolio accommodates up to 25 insert pages, which are not included but are available in packs of 10 here.