10-In-1 Circuit Alert Screwdriver, Snap In Sensor Detects AC Voltage Without Contacting Live Wires, Screwdriver Includes Insulated Shaft & Handle, #1, #2 Phillips, 3/16", 1/4" Slotted, R1, R2, 1/4", 5/16" Hex Nut Driver, #10 & #15 Torx , Insulated Shaft Protects User From Voltage.