Standard size task lamp. Requires M6 nuts and bolts for the 3 joints. Recommend using PLA+ for strength. To assemble, each arm requires a double joint, a tube and a single joint connected using the connector and thread the wire through the arms. The base joint fits a standard desk lamp clamp. You will also need E27 socket and a switch for the lamp head. Use only low temperature LED bulbs. Takes some tinkering and adjustments.