Sensor Mounting Brackets: Bracket Type - Photoelectric Sensor Mounting; Shape/Configuration - 90-Degree; Bracket Mounting - 2 x Slots; Sensor Mounting - 0.17"(4.2mm) Hole; Material - Stainless Steel; Dimensions - 0.35x0.60"x1.00"(8.9x15.2x25.4mm); Use With - Plastic Fiber With M4 Tip; Additional Information - Low-Profile Right-Angle Bracket For Plastic Fiber Optics With 4 mm Threaded Tip