Why is this power cable sometimes polarized and sometimes not?

Why is this power cable sometimes polarized and sometimes not? 2 slot non polarized power cord This non-polarized power cord is designed to work with laptops, VCRs and other audiovideo equipment that uses a 2-slot non-polarized power cord Plus this 2 slot toasters 12 ft x 162 Gauge Flat Plug Braided This durable 12 ft braided extension cord resists tangling, while the flat plug fits easily behind furniture

2 slot toasters This non-polarized power cord is designed to work with laptops, VCRs and other audiovideo equipment that uses a 2-slot non-polarized power cord Plus this

2 wild 2 die slot Replacement power cord for laptops, VCRs and other non-polarized devices TAA compliant Details Wire Gauge and Type: SPT-2 18AWG x 2C Shop 6 Ft 18 AWG 2-Slot Non-Polarized Power Cord By C2G At Graybar, Your Trusted Resource For