This handy belt clip is ideal for sew-in applications on leather, ballistic nylon, or neoprene cases. The sew-able stitching channel is thin enough for a heavy-duty needle to penetrate, and completely circles the clip making for a very secure attachment. This belt clip is super strong too, making it a reliable application for rough-duty or heavy-duty cases. The SI-120 has a raised stitching channel which protects thread from abrasion; they also have chamfered edges to keep them from catching on protruding objects; and the material they are molded from has physical properties which give the SI-120 unbelievable performance characteristics.