ITEM NAME:5.2mm Diameter Direct Insertion Electric Guitar Tremolo Arm Whammy Bar-Black Description: Double roll tremolo vibrato whammy bar arm crank lever 5.2mm thread diameter for electric guitar tremolo system Material : iron Wear-resistant portable and durable A good friend of the electric guitar Size Chart: Diameter: Approx. 5.2mm/ 0.21 inch Package Includes: 1 Piece Electric Guitar Tremolo Arm Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size. SKU: CKX0015565361008703.1 Piece Electric Guitar Tremolo Arm. A good friend of the electric guitar. Material : iron. Size Chart Due to the difference between different monitors, the picture may not reflect the actual color of the item.