Teaching Instrument Coffee Color Plastic Chalk Circle Drawing Compasses.Product Name : Drawing Compasses ;Main Color : Coffee ColorMaterial : Hard Plastic;Maximum Circle Radius : 70cm/ 27.6"Compasses Size(Unfolded) : 80 x 4 x 2m/ 31" x 1.6" x 0.8" (L*W*T);Copasses Size(Folded) : 44 x 4 x 2cm / 17.3' x 1.6" x 0.8"(L*W*H)Rubber Dia : 3.5cm /1.4";Weight : 130gPackage Content : 1 x Drawing PassesHard plastic pencil compasses with mechanical pencil lead， used for drawing circle or circular arc.Black rubber suction cup can make it steady at blackboard.Geometry tools， especial suitable for teacher teaching use.