X-4 Tools is headquartered in Billerica, Massachusetts, and is a leading provider of torque multipliers and torque limiters, proudly made in America. Their torque multipliers offer ample power to loosen tough threaded fasteners, generating torque from a few hundred pound-feet to thousands of pound-feet with precision. The planetary gear design allows one person to develop up to 12,000 foot-pounds of torque in tight spaces without the need for air or electricity. X-4 Tools' high-grade alloy steel parts ensure maximum strength and service life, providing steady pressure without dangerous jarring impact. They offer repair and rebuilding services for their torque multipliers, emphasizing durability and quality in their products.