Self-sticking pipe markers from Brady simplify installation with their factory-applied industrial-grade adhesives: simply peel off the backing and press the marker in place. Style 4 pipe markers measure 1-1/8 in. x 7 in., comes with four markers per card and fit pipe diameter 3/4 in. to 2-3/8 in.. Good chemical, oil and water resistance. Banding each end of a pipe marker with directional flow arrow tape is recommended.