Features Quickly find exact center of stock with no measurements. Clear impact resistant plastic for better visibility. Find centers of circles, octagons and square up to 8. To use place on corner, scribe a line, rotate 90 degrees and strike a second line. Intersection is center. Practical measuring and layout tool for woodworker, provide convenience and save time. Quickly find exact center of stock with no measurements. Clear impact resistant plastic for better visibility. Find centers of circles, octagons and square up to 8. To use place on corner, scribe a line, rotate 90 degrees and strike a second line. Intersection is center. Practical measuring and layout tool for woodworker, provide convenience and save time. Specification: Material: plastic Size: as the picture shows Weight: 65g/2.3oz Package list: 1 x Plastic Center Finder Package List