Kit's KissEngineer Keychain Circuit Board Electrical Electronic Design Computer Engineering Teacher Student Graduation Gift Computer Laptop Charms Keyring, Silver, Diameter of Key Ring : 1.38 inches (3.5 cm),

Engineer Keychain Circuit Board Electrical Electronic Design Computer Engineering Teacher Student Graduation Gift Computer Laptop Charms Keyring, Silver, Diameter of Key Ring : 1.38 inches (3.5 cm),

Genius Lab Gear The Pocket Engineer - Wallet Engineering Ruler Scale and Unit Conversion Reference 3 inch