Features Alloy steel bits Chrome finish Twelve points Used on Mercedes, BMW, VW, Audi, Porsche, Volvo Storage case included   Specifications  Case Dimensions: 8.5″ x4.5″ x 1.5″ Weight: 2 LBS Sizes of Bits: 1/4″ DR: 4mm, 5mm, 6mm 3/8″ DR: 8mm, 9mm, 10mm, 12mm 3/8″ DR. Temper Proof: 14mm 1/2″ DR. Temper Proof: 16mm,18mm Material: CRV Alloy Steel   Items Included  10  PCS Spline Bit Socket Set 1 PCS hard  plastic storage case