This professional knob is crafted aluminum for practical and durable for use. With fine workmanship, no burrs, knurled finish, fashion and beautiful. Light weight, easy to carry and use. Great for potentiometer knobs as well as volume control knobs for sound equipment. Features -Color:Black -Material:Aluminum -Size:3.80X3.80X0.20cm/1.49X1.49X0.08in -Diameter: 38mm/1.49" -Shaft Diameter:34mm/1.33" -Height: 20mm/0.78 -Hole Size: 6.0mm/0.23" -The knob is made of durable hard aluminum with , durable and stable, high durability and high compatibility. -The knob has a knurled finish around the circumference, giving you comfortable using experience. -The convenient and practical knob has a wide range of applications, perfect for kinds of guitar. -You can use this knurled finish knob to dress up your electric guitar or replace the dingy or old knobs. -The knob processed with smooth surface treatment, safe to touch without hurting hands. Package list: 1 x Control Knob