he #4 loop knife is our largest size in our loop product line. The #4 is designed to do the same trimming work as our flat bladed hoof knives. This loop knife is double-edged, therefore can be used left or right handed as well as in a pushing or pulling motion. Ringel loop knives are available in many different sizes and shapes. The larger sizes work well trimming the sole and frog, while the smaller sizes and shapes are specialty tools designed for delicate and surgical work. The unique handle design features a thumb cut out which allows more leverage during use. All Ringel knives are sharpened prior to shipping.