-Machined aluminium insert with spirit bubble
 -Designed to ensure banksticks and buzz bars are perfectly straight/level
 -To use with QR Buzz Bars: remove the centre alarm/back rest and insert the Spirit Bubble, securing in place with a 10 degree turn.
 -For use with Black Label banksticks simply remove the inner stick and clamp securely in place using the bankstick Cam-Lok