The REB2960 Grounding Clamp from Stewart R. Browne is a popular and versatile product. Heavy duty die-cast aluminum handles with 2 stainless steel points are the basis of these grounding pliers. This design allows the clamp to get through multiple layers of paint or corrosion build-up so that proper contact is made to bare metal. This is quite different from the ALS10A Aircraft Grounding Clamp with non-marring plated steel jaws. The stainless steel contacts are machined to a sharp point. They are replaceable, but may also be re-sharpened by resourceful maintenance folks. Other design details include a plated steel spring that provides approximately 55 pounds of closing force. Squeezing this ground clamp to open it will put you in mind of a Charles Atlas exercise device. The grounding wire or cable is accepted on one leg of the pliers. 2 allen set-screws secure the conductor in place. The opening is .185 inches in diameter, and accommodates up to 5-AWG wire. The REB2960 ground clamp has a wide variety of uses, including when transferring flammable liquids between containers or other maintenance operations where static generated sparks could cause a problem. This product carries FM (Factory Mutual) approval, with the FM logo cast onto the handles. Made in U.S.A.