SLoffice Drawing Compass Math Geometry Tools Good quality and durable material: The compass is made from stainless steel, ergonomic design and simple to use. Center wheel for easy adjustment Size: 11.5 cm x 2 cm x 0.6 cm.Weight: 49 g / 1.73 oz. Mechanical pencil for compass with 2 mm pencil lead, used for drawing circle or circular. Package included: Silver metal compass, refill a spare lead tube and comes in a plastic wallet. Geometry tools, a convenient choice for teachers and students, durable and easy carry.