220v outlet with 110v extension cord

Can I use this on my 240 plug in my garage to run 110 tools, or do I need to get a box(I was told what they were called and forgot)

Conair Dual Mode Travel Plug Adapter & Voltage Converter, 110V/120V to 220V/240V

How to Get 220v From 110v

Experiment convert 110v to 220v from two outlets

220v outlet with 110v extension cord

Convert 220 to 110 Outlet - Keep 220 and Add 110

220v outlet with 110v extension cord

electrical - 220v extension cord - Home Improvement Stack Exchange

This AC WORKS brand RV/ Generator/Range protective power strip cord [S1450CBF520] is very durable. The cord is 1.5-feet in length and is a NEMA 14-50P

AC WORKS 4-Prong 220-Volt Plug to 120-Volt 15/ 20Amp Household Female Adapter Cord (4-Prong 14-50 Outlet to (4) Household W/Breaker)

Is it possible to use an extension cord from a 220-240v country in a 110v outlet? - Quora

Male 220V-250V Plug To L5-30R 110V-125V Female Receptacle Socket Outlet Adapter, -Lock 3-Pin Electrical Power Connector Cord Converter, NEMA. FX125V1422

220V/110V Power Supply Switch Power Outlet with Socket Fuse for 3D Printer