Posi Lock "Lock It" Assortment includes 3 Each Red Blue Yellow connectors. Description: Posi-Lock Connectors Patented design delivers a superior connection to crimping with only wire stripping required. Wire ends are locked between opposing cone shapes when hand tightened, resulting in a positive, insulated, strong connection. AC/DC stranded wiring up to 600 Volts Any Amperage Installs in seconds by hand No crimping or tools required Less resistance Vibration proof Fully insulated