The design of this product entirely belongs to the TR Maker Brand We claim that this knife jig will save you time and it is very easy to sharpen you knife with this productAdjustable angle from 85 degrees to 125 degrees9" (25 cm) lenght ve 3,8" (8 cm) heightNoncorrosive body of the product that is made from T6061 plane aluminum is embroidered in sensitive CNC machines.It has 30 big(m8) and 16 small (m6) threaded bolts for many different knife models.Because of two big conduits, you can connect your knives in any heights you desire.You will receive 6 additional bolts to connect your knivesIt never vibrates thanks to hinge that buried in the body of the productBecuse of the special desing jointed handle, it opens to right and closes to the leftFor a better use and comfort, it has a special arm to hold and graspIt has a durable plastic layer like a sledge at the bottom of it to provide a better slideThanks to anodized coating, the product is protected toward corrosion