ProTool 4-Piece Precision Triangle Tip Screwdriver Set-1.6 to 2.3mm-Electronics, Game Systems, Cell Phone, Appliances, Silver Hazard to find tool set for electronic devices Triangular tips in sizes 1.6, 2.0, 2.2 and 2.3Mm Fit specialty screws found on cell phones, computers/laptops/tvs, game consoles, small appliances Hardened high-carbon steel resists twisting and cam-out Hex handle tip for applying extra leverage with wrench. Length overall 3-1/2