FireTacks are multi-directional, reusable and made from high quality plastic with coated pins to resist rust and avoid tree damage. The 3M commercial grade prismatic reflective material is “Retro-Reflective” andboth the material and the reflectivity will last for a long time.
3D Pyramid shape FireTacks are great for trails with longs lines of sight, or with angles. The surface face of the 3D is slightly greater than 4D, so they can be seen at longer distances. Because the 3D is a pyramid, when viewed head on facing the point, they are not as bright as the 4D. Use both 3D and 4D as a “System” to mark waypoints and trails.
Diamond Bright (middle rightin the picture) Neutral gray for day and brilliant white at night — perfect for GeoCacher or Hunter.