SHREDNECK TREMPACK 5 includes TremBlock, TremTool1 and String Winder TREMBLOCK - The SHREDNECK 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 the bridge. Changing strings on your floating tremolo system can be tedious and difficult. Not with the new Shredneck TremBlock string changing tool! When you are ready to change your strings, push the wammy bar down and insert the Shredneck TremBlock under the bridge. The soft pad under the TremBlock rests on the guitar top allowing you easy access to the string 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 up close 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: SHREDNECK TREMTOOL 1 - The Shredneck TremTool 1 is an all-in-one, easy access tremolo tool that will aid in string changing, tuning, intonation and general adjustments. he SHREDNECK TremTool 1 (Model # SN-TT1) fits Floyd Rose style tremolos and locking nuts with 2.5mm HEX for intonation adjustment and 3.0mm HEX for the bridge string lock and locking nuts. Each model is equipped with HEX wrenches designed to fit string locks on both the bridge and nut and intonation screws. A Standard Head & Phillips head screwdriver bit is included for general adjustments and compartment access on your guitar. MULTIFUNCTION STRING WINDER 3-in-1 - Multi-Function String Winder with "REMOVEABLE BIT" that can be used with cordless screw drivers/drills. Built-in Quick Bridge Pin Puller Slot. Light weight and can be used for GUITAR and BASS and most string instruments