Description This product is made of metal, acrylic materials, durable and practical. If you are looking for a pen ink cartridge. Don't hesitate, our product is perfect for you, you can also give it as a gift to your friends or family, they will love it. Features - Color: As shown. - Material: Metal, acrylic. - Size: About 12.00X1.50X1.50cm/4.72X0.59X0.59inch. - Built with strong and durable material to withstand continuous use. Not easy to deform, it's convenient and durable. - The product has a simple design, but very practical in use, to bring much convenience to you. - The product design conforms to the ergonomic design, easy to install and use. - From the overall design and finish exquisite workmanship would be seen. The product has fine craftsmanship. - Our pen and Writing aid grip adopts ergonomic design, which is helpful to correct the pen holding posture. Built with strong and durable material to withstand continuous use. Not easy to deform, it's convenient and durable. The product has a simple design, but very practical in use, to bring much convenience to you. The product design conforms to the ergonomic design, easy to install and use. From the overall design and finish exquisite workmanship would be seen. The product has fine craftsmanship. Our pen and Writing aid grip adopts ergonomic design, which is helpful to correct the pen holding posture.