Check the listing for details. HP 10701A 50% Beam Splitter 1" Cube 25mm. Condition: Used. Listed at 119.99 USD. The HP 10701A 50% Beam Splitter is a high-quality optical component designed for precise light splitting. This 1" cube with a 25mm size allows for the efficient and accurate division of light, making it an essential tool for various imaging and inspection applications.