The product is a vintage Starrett V block with clamp, specifically model number 271. This metalworking machinist tool is designed for holding metal objects securely in place during machining processes. The high-quality construction and reliable performance make it a valuable tool for professionals in the CNC, metalworking, and manufacturing industries. The inclusion of a clamp adds versatility and convenience to the V block, allowing for even greater stability and precision in various machining applications.