The W1254-BF 25.4 mm square × 2 mm thick optical blank is precision-cut from high-quality BOROFLOAT® borosilicate glass, offering excellent optical clarity, low thermal expansion, and stable mechanical performance in a compact format. With tightly controlled dimensions, smooth surface quality, and fine edges, this 25.4 mm square wafer is well-suited for imaging systems, optical instruments, photonics research, metrology targets, and other precision engineering applications where consistent material properties and reliable performance are essential.