This petite 2oz ink bottle features a wide mouth and a durable plastic design. The top opening is large enough to accomodate a fountain pen allowing the nib to be submerged and the pen refilled with ink. The square-ish bottle shape maximizes storage space and the lined plastic screw-on cap helps to prevent leaks. Great for storing your favorite inks and custom colors. The container stands approx. 3" tall and 1.5" wide.