Material: nylon, metal Size: about 88 x 84 mm / 3.46 x 3.35 inch Engraving machine parts accessories Nylon CNC Milling Carving Engraving Machine Color: Black Nylon plate: light and practical, good toughness, no scratches, all material, durable. T-shaped screw: high level and high precision, easy to operate , the thread is not easy to slip and deform. Angle adjustment nut: good material, high toughness, no damage to building materials Wing nut: butterfly shape, easy to twist, does not hurt your hands, easy to use. Round spacer: Extends the life of the wing nut. Color: Black Five-piece set: wing nut + round washer + nylon pressure plate + nylon nut + T-shaped screw Quantity delivered: 4 pieces