Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Product specifications: 2 Pack 4/09 Roof Shingles Roofing Measuring Tool, equipped with carabiner for carrying convenience. And it also has a 5-inch ruler on one side. Instructions for use: 4/09 shingle gauge is only applicable to asphalt composite roof shingles installed before January 2011. Suitability: Our 4/09 Shingle Gauge is used to estimates the level of asphalt composition shingles 3-tab Fiberglass, 3-tab Organic. High quality: The shingle gauge made with high-quality stainless steel, 3mm thickness, and high hardness for rust-proof and corrosion-resistant long-term use. Material: Stainless steel colour: silver Package Contents: 2 x shingle gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.