Bigsby bridges, with their unique design and high durability, are ideal for electric guitars. - Brand: Bigsby Tremolo Unit - Original Kalamazoo Series - B6 Type - Specifications: - Manufacturing Method: Sand Cast - Material: Aluminum - Model Number: No. D169,120 - Type: Full-hollow, Semi-hollow bridge - Mounting screws, tension spring, and nut are missing. Thank you for viewing.