Use of Item- Toolmaker's vices are designed to hold workpieces with extreme precision. The 1.5-inch vice is best for smaller, fine parts, while the 3-inch vice can accommodate slightly larger parts. Ideal for holding tools, small parts, or delicate components that require precise alignment during grinding or milling operations. Jaw Width - 1.5" Inches- 38 MM, Jaw Depth : 20 MM Maximum Jaw Opening 3" Inches II 75 MM Body Dimensions: Length 148 Mm X 38 Mm Wide. JAW OPENING: 4" JAW WIDTH3 JAW DEPTH1-3/8 Product Dimension: 7-9/32" L x 3" W x 2-3/4" H High precision one-piece steel construction. Grinding: Toolmaker vices are primarily used for holding workpieces on surface grinders and other grinding machines. Their high-precision jaws help ensure that workpieces remain stationary and properly aligned during grinding to maintain dimensional accuracy and surface finish. Durable Construction: Built to withstand the rigors of daily use, this peg clamp is constructed from high-quality materials, ensuring long-lasting durability and reliability. It's a must-have addition to any crafter's toolkit, providing stability, support, and precision for all your crafting endeavors., Weight: 7.275254646 pounds, Manufacturer: Buyohlic