Body Material: High Impact ABS. Barrel: High Impact ABS. Bell: High Impact ABS / Ringless. Key System: Boehm (17 Keys / 6 Rings). Key Material: Nickel Silver. Plating: Nickel. Bore: Cylindrical / .583" - 14.83 mm. Tone Holes: Undercut. Springs: Stainless Steel. Pads: Double Skin. Posts: Knurled. Mouthpiece: Leblanc Student. Ligature and Cap: Nickel-plated. Included Accessories: Genuine Leblanc Swab / Cork Grease.