Features: _x000D_ Quickly find exact center of stock with no measurements _x000D_ Clear impact resistant plastic for better visibility _x000D_ Find centers of circles, octagons and square up to 8", Find center of hexagons up to 5-3/4" _x000D_ To use place on corner, scribe a line, rotate 90 degrees and strike a second line. Intersection is center. _x000D_ Practical Measuring & Layout Tool for woodworker,provide convenience and save time _x000D_ _x000D_ _x000D_ Specification: _x000D_ Material: plastic _x000D_ Size: as the picture shows_x000D_ _x000D_ Weight: Approx.65g/2.3oz_x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x Plastic Center Finder _x000D_ 1Quickly find exact center of stock with no measurements 2Clear impact resistant plastic for better visibility 3Find centers of circles, octagons and square up to 8", Find center of hexagons up to 5?" 4To use place on corner, scribe a line, rotate 90 degrees and strike a second line. Intersection is center. 5Practical Measuring & Layout Tool for woodworker,provide convenience and save time