| Industry Size | Diameter (Inch) | Weight (lbs/ft.) |
| 3 | 3/8″ | .376 |
| 4 | 1/2″ | .668 |
| 5 | 5/8″ | 1.043 |
| 6 | 3/4″ | 1.502 |
Our RINGGUARD design fixes a multitude of problems with traditional survey caps! We developed a special ring that minimizes damage to the cap and text when you drive it onto a survey pin. Each letter is molded into the cap itself – never stamped! Finally, we engineered the cap with a chemical resistant plastic resin capable of withstanding temperatures from -50ºF to 200ºF.