Completely useless to me. The large blob of solder at the junction of the threads and ceramic base, by design, systematically prevents them from being screwed deep enough into the socket to make an electrical connection. Possibly worse, the glass (quartz) envelope of each lamp tested was contaminated, which could have caused an explosion during operation. Good for the trash - I guess that's why they were so "frugal".
10-Pack G4 LED Bulb Bi-Pin Base 2W AC/DC 12V Daylight White 6000K - Equivalent To 20W Halogen, Non-Dimmable T3 Energy Saving Home Landscape Light Lamps
28 Review
E12 5W LED Light Bulbs, 40W Equivalent Candelabra Base Dimmable Color Changing RGB Cool White 5700K With Remote Control - Set Of 6
13 Review
4 Pack LUXRITE F32T8 T8 LED Tube Light 18W=32W 3500K 4000K 5000K 2340 Lumens Frosted Cover UL DLC Type A+B Single/Double End Powered Plug & Play/Ballast Bypass
11 Review
G9 25W Halogen Bulb T4 – Clear, Warm White 2700K – Bi-pin Base – 120V – 10 Pack
11 Review
E12 T22 Low Voltage Edison Bulb LED 12V-24V Vintage Tubular Night Light Bulb 1W 100 Lumen LED Candelabra Light Bulb 2700K 10W Equivalent Small Filament Bulb For RV,Out Door String Lights, Pack Of 25
15 Review
Linkind Dimmable A19 LED Light Bulbs, 60W Equivalent, E26 Base, 5000K Daylight, 9.5W 840 Lumens 120V, UL Listed FCC Certified, Pack Of 12
12 Review
Luminescent lamp Camelion 11066 ultraviolet, E27, 26 W
12 Review
20 Pack 5CCT 4FT LED T8 Ballast Bypass Type B Light Tube, UL/FCC Certified - 18W, 2300Lm, 3000K-6500K Selectable
21 Review