Assalamo Aleykum
This question has been asked to Sheikh Bin Baz Rahimahu Allah
Question:
What is the ruling regarding the use of Al-Misbahah for glorification?
Answer:
We know of no precedence in the Shari'ah for the usage of beads for the Tasbih, so it is therefore better to limit ourselves to the Sunnah, which is to count the Tasbih using the fingers.
Shaykh `Abdul-`Azeez Bin Baz
Fatawa Islamiyah, vol.8, p.368, DARUSSALAM