Floating Bridge String Changing Tool plastic Soft pad on bottom side Tapered edge for easier insertion The TremBlock is designed to hold your floating tremolo system "up" in a fixed position to allow for easier string changing. To use simply raise the tremolo and insert the TremBlock under . Changing strings on your floating tremolo system can be tedious and difficult. Not with the new TremBlock string changing tool! When you are ready to change your strings, push the wammy bar down and insert the TremBlock under . The soft pad under the TremBlock rests on the guitar top allowing you easy access to locking hex screws on many floating bridge systems. Simply replace the strings one at a time or all at once (quick tip, as long as you have all of the strings off, clean your fingerboard). Tune to pitch and then remove the TremBlock. The TremBlock will greatly reduce the amount of time it takes to change strings on your floating tremolo system: Colour:black Material:plastic Size:about 125 x 40mm Package Contents: 2 x Floating Tremolo Bridge Shim Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.