Nsi GLC-440DB Heavy Duty Direct Burial Ground Clamps Grip On Pipes Between 1-2-1/2" to 4" In Diameter and Are The Ultimate Ground Clamps For Securing Just About Any Size Ground Wire In Just About Any Application. The Bronze Body and Pre-Assembled 304 Stainless Steel Screws Are Made Of Economical, High-Quality Metals That Provide Durable Performance In A Range Of Applications. The Lay-In Lug Design Of These Clamps Provides Ultimate Flexibility When Securing Large Conductors and Can Accommodate Wires In The