Fangrui Product Details Powerful Marking And Marking Tools: Professional Compass With Universal Adapter, Extension Beam For Mathematics, Geometry, Art, Drawing And Drawing. .purpose: Suitable For Professional All-metal Compasses/dividers For Woodworking, Woodworking, Metal Processing, Leather Processing, Mathematics, Etc.drawing Range: It Can Draw Circles Up To 35/60 Inches In Diameter, Which Is Suitable For Most Materials.high Quality: Made Of High Quality Pp. Please See The Picture For The Detailed Sizeservice: If You Have Any Questions, Please Contact Us. We Will Protect Your Interestsspecifications:material: Ppoptional Sizes: 90cm (max Diameter) And 150cmnotes:1. Manual Measuring, Please Allow 1 ~ 3mm Error,thank You.2. Due To The Difference Between Different Monitors, The Picture May Not Reflect The Actual Color Of The Item. We Guarantee The Style Is The Same As Shown In The Picture.package Including1 X Compasses (pencils Not Included)products From Bazhou's Store