The BiggsFix BTS5712VM Tuning Stabilizer is for Bigsby models B5, B7 and B12 that are mounted on Vibramate adapter plates. If you are experiencing too much down pressure and your string angle over the bridge is extreme AND your Bigsby is mounted on Vibramate, then adding the BiggsFix VM results in your string angle more closely matching that of Bigsby's non-tension roller vibrato systems. This version has 1.5mm less relief than original Biggsfix and is specifically for Bigsbys mounted on Les Pauls other guitars with Vibramate.
Mounts with the NEW "Stub Axle" mounting screws. No need to thread strings between Biggsfix roller and stock axle. Axle is not used for attachment.
Telecaster is excluded from the list of guitars the stabilizer works with. There isn't quite enough tension left to hold the strings on the saddles when the stabilizer is installed.
Most USA made Bigsbys have an axle retaining set screw on the bottom of the Bigsby. This pesky little set screw requires a 5/64" Hex Key. If you need one, consider adding one to your order.
Also, consider adding a "Super Squishy" spring to your order. While not increasing tuning stability, it WILL increase your playing pleasure!