portable tool card 1. OEM is available 2. Size:5.7*4.5* ... design, Top quality and durable.So small, practical life-saving card ,put one in the wallet ,another hanging on a key ... bottle cap.10. Screwdriver: located on the corner of a card (this location makes use of the principle of mechanical strength ... has a round hole on the cross, can hung this card on the key ring.