ITEM NAME:40A 6.3mm Car Auto 5 Pin Relay Socket Relay Holder with 50Pcs Copper Terminal Description: Connectible interlocking sockets for an easy installation. 12V/24V 30-80Amp 5 Pin Relay Socket for Automotive. Relays and sockets are used for many car electronic applications to turn on/off almost any device. They are also used when a device draws heavy amperage such as car alarms, remote starts, HID headlights, doors, trunk releases strobe lights, fog lights, stereos, fans, air horns, and much more. Specification: Material: PA66 Size: Approx 36*36*31mm Terminal Size: Approx 6.3mm Package Includes: 10 Pieces Relay Socket 50 Pieces 6.3mm Terminals Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making.12V/24V 30-80Amp 5 Pin Relay Socket for Automotive. 10 Pieces Relay Socket. Relays and sockets are used for many car electronic applications to turn on/off almost any device. They are also used when a device draws heavy amperage such as car alarms, remote starts, HID headlights, doors, trunk releases strobe lights, fog lights, stereos, fans, air horns, and much more.