8 Sizes: Includes 8 different sizes of circle templates, inner diameter about d 0.98", d 1.97", d 2.99", d 3.94", d 4.9", d 5.9", d 7.08", d 7.87". Provides inch/cm 2 units of measurement, to meet the measurement needs of different projects Material: Acrylic material is not easy to damage, long-term use can still maintain good measurement performance. High transparency, you can clearly see the lines and objects underneath when measuring Easy to Use: The scale markings on the ruler are clear and crisp, making it easy to read measurements quickly, and there is a film on the surface of the template to protect the ruler, which can be torn off during use Easy to Carry: Our router templates are small and lightweight, whether in the studio, at home or outdoors, you can take measurements at any time, easy to organize and store, does not take up space Wide Used: Suitable for a variety of occasions, such as crafts production, furniture design, decoration construction, etc. It is the best choice for designers, engineers, students, DIY enthusiasts and other types of people