FAKTR F-4 Instrument
F-4 - This instrument is 7 3/4 inches in length and 1 7/8 inches in height. It weighs 6 ounces. There are 2 convex surfaces, one on the top and one on the bottom with 2 concave surfaces also on the bottom and top. At each end, there are 2 tips with edges, approximately the same size. All edges are double beveled.