The Spark CAGE increases the versatility of the popular SPARK Marking Light. Molded from impact resistant polymer, it secures a single SPARK via press-fit. All four sides feature a split pass-through for standard 1" webbing. Integral rare earth magnets allow it to attach to most metal surfaces.Features : "2.375" (W) x 2.375" (L) x 0.25" (H)" Polymer Construction Magnetic Mount Type Fits SPARK Marking Light