String Instruments Accessories -Guitar Tremolo Block Highlights Generic Brand Guitar Tremolo Block Description: 6 Set Double Locking Tremolo Locking Bridge String Six Axis Screws Saddle Insert Block Great for electric guitar, easy to use Suitable for the locking double tremolo bridge saddles locking chain Set of 6 saddle insert chain locking blocks Material: Iron Size Chart: Wire Diameter: about 4mm Overall Length: about 12-13mm Hex Socket Hole: 3mm Size (L x W x T): Approx. 7.9 x 4 x 5mm / 0.31 x 0.15 x 0.19inch Package includes: 6x Hex Socket Head Screws 6x Guitar Bridge Saddle Insert Block Note: Due to the difference between the different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be an error of 1-2mm.