Molecular Models Black Plastic Tetrahedral Carbon Atom Center, 23mm Diameter (Pack of 25)

25 individual tetrahedral Carbon atom centers with bond angles at 109.5 degree. Atom center is 23mm in diameter and made of durable high gloss plastic for years of reliable use. Atom centers are brilliantly finished for easy visibility and identification of their representative element in accordance with universally accepted standards. 10 Series parts are interchangeable with Molymod brand molecular models.