Modern clarinets are made from either wood, plastic, or resin. Each material offers benefits and drawbacks. Clarinets intended for beginners are made from plastic or resin. Intermediate and professional clarinets are made from various types of wood. African blackwood, redwood, and grenadilla wood are popular choices. The keys are made from metal. Some are silver-plated, others are gold-plated. Clarinet pads are made of a variety of materials. The pads chosen depend on the music being played and the skill of the player. Pad materials include: • Cork • Synthetic materials • Woven felt • Leather