Captive Rings Design 99 Beads of Old Bakelite Tea Color. The tasbih is made by Ahmet Ozbek. 99 Diamond shaped beads having the size of 7×7 mm. There are captive rings on imame , duraks , tepelik , lock , nail of tepelik which are indicator of mastery. The tasbih is made of old bakelite material. Nice piece for collection.