Preferred materials, good quality, safe, durable and practical. This item is a mini bench vise, you can use this small vise to clamp the object for easy grinding and drilling, which is more convenient and safer. Features -Color: Black. -Material: Aluminum alloy. -Size: About 10.60X6.00X3.50cm/ 4.17X2.36X1.38in. - It has simple design and sturdy structure, which makes it easier for you to making drilling work. - Made of high-quality aluminum alloy material and can serve you for a long time. - Clamp the item with this small bench vise clamp to grind polish the hole. - Aluminum alloy material made and it is very durable. Very portable, can be taken along and used anywhere. - Excellent for holding small parts, suitable for hobby work, such as jewelry, model makers, and more.