Features: Metal Lock Mechanism: Metal locking mechanism, which is much more durable than others' plastic lock. Metal lock mechanism is designed for long term use. It can keep the original shape without transformation, helping you duplicate and transfer the shape accurately to anywhere you need. Adjustable Tightness: Never worry about too loose or too tight of plastic pins to slide in, especially after being used for several times; with the bonus little allen wrench, you can simply adjust the tightness of plastic pins according to your preferences. Material: Made from heavy duty aluminum core and durable ABS plastic pins, profile gauge will not scratch the original finish of the shape being duplicated. The 45 degree pin teeth design will also maximum the accuracy of measurement. Easy to Use: No matter you are amateur or professional, simply remember three steps: Copy it. Lock it. Trace it. You just press the contour gauge on one of the shapes. Then trace and trim the outline, and cut into shape. Why You Need This: With Contour Gauge you can duplicate any shape instantly. It creates an instant template for curved and odd shaped profiles simply and easily, you can use it for flooring, tiling, carpet laying, linoleum installation, ceramic measurement, woodworking project, home improvement, etc. Features: 13.5cm widened design, with lock design, adjustable design, clear white size mark. Specifications: Material: ABS, aluminum alloy Color: Orange Types: A(6 inches), B(10 inches), C(6 inches+10 inches) Size: (Approx) 6 inches, 10 inches Package Included: 1 PC/2 PCs x Contour Gauge Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.