Durable oil sight glass with high strength, good toughness, and wear resistance for long service life. Designed with a transparent window to easily observe fluid levels and monitor oil color, clarity, and presence of water or contaminants. Constructed from aluminum material for reliable performance. Features simple installation, strong sealing, and convenient use. Available in 13 styles for compatibility with various applications. Suitable for use in workshops, factories, machinery, and industrial projects. Item Name: Oil Sight Glass Material: Aluminum Features: Heavy duty, wear-resistant, good toughness Size Details (Diagonal Edge): Style A: 2.12cm / 0.83" (Approx.) Style B: 2.1cm / 0.83" (Approx.) Style C: 2.377cm / 0.94" (Approx.) Style D: 2.621cm / 1.03" (Approx.) Style E: 2.846cm / 1.12" (Approx.) Style F: 3.17cm / 1.25" (Approx.) Style G: 3.19cm / 1.26" (Approx.) Style H: 3.6cm / 1.42" (Approx.) Style I: 2.116cm / 0.83" (Approx.) Style J: 2.628cm / 1.03" (Approx.) Style K: 3.18cm / 1.25" (Approx.) Style L: 4cm / 1.57" (Approx.) Style M: 4.78cm / 1.88" (Approx.) Note: Due to lighting and screen settings, the item color may vary slightly from images. Slight dimensional differences may occur due to manual measurement. Package Includes: 1 x Oil Sight Glass