Standard Tubing

4.75" (12cm) tubing ($10/100): ===== light green (F) ===== dark green (Cl) =====orange (Br) =====brown (I) ===== violet (P) ===== light yellow (Si) ===== dark yellow (S) ===== gray (metallic elements) ===== white (H) ===== black (C) ===== blue (N) ===== red (O)   4.75" (12cm) printed 2-color tubing ($20/100): ===== black on white (C-H) ===== red on white (O-H) ===== blue on white (N-H) ===== black on red (C-O) ===== black on blue (C-N)

Standard Metal Centers
	Main Metal Centers ($20/100): Tetrahedron (sp3, 4 prong) Trigonal Bipyramid (sp2, 5 prong) Octahedron (sp, 6 prong)   Metal Connectors ($10/100): Angle (90o, 2 prong) Pin (180o , 2 prong)