This replacement glass insert is compatible with various Leica cryostat models: CM1510, CM1510S, CM1520, CM1800, CM1850, CM1860, CM1900, CM1950, CM3000, CM3050, and CM3050S. The 70mm wide glare-reducing glass insert is designed for anti-roll systems CE 14 0477 42491, 14 0477 42492, and 14 0477 42493, and is suitable for blade holder CE 14 0477 43005. Anti-Roll Glass Measurements: •Width: 70mm •Depth: 30mm •Thickness: 3.7mm