JRL Universale Clipper Guards Set (8pcs) JRL Universal Clipper Guards fit most hair clipper brands on the market, Size: 0(1/32"), 1/2(1/16"), 1-1/2(3/16"), 1(1/8"), 2(1/4"), 3(3/8"), 4(1/2"), 5(5/8") Advantages: Protects the scalp from the sharp edges of moving blades. Universal (can be used with any make and model of hair clipper). Resistant. Adequate space between the teeth for precise adjustment of the cut. Smooth and rounded edges.