[DETAIL] Features�� 1.Forged with high quality carbon steel,after heat treatment has better hardness, strong and durable, rust resistence. 2.Designed for precision layout and measurement work, 4 sizes of square ruler onsale , meeting various measuring or designing need. 3.Thicken base design ,not easy to tilt. Right angle and clear specifications design, make the work is more effiecent and accurate. 4.Coming with a store case, is conveninet to carry or storage. Specifications�� Material: carbon steel Color: silver Size: as the picture Packing list�� 1*L-shape wide seat square ruler [ATTRIBUTES] - Hign-concerned Chemical: None - Ruler Type: Straight Ruler - Material: Metal - Hign-concerned Chemical: None - Ruler Type: Straight Ruler - Material: Metal - Origin: Mainland China