Includes 1/4\" O.D. and 3/8\" O.D. Wire Insertion Tools for Use When Installing Wires for Audio Electronics, Aftermarket Lighting, Alarm Systems and Much More. With a sharp point on the end and palm size handle, these tools provide extra leverage to pierce through firewalls, rubber grommets and panels. The 10-1/2\" steel tube provides easy access to feed wires through the firewall. Tools are available individually; 60950- 1/4\" O.D. Insertion tool and 60960- 3/8\" O.D. Insertion tool.