We sell a lot of these, even though we haven't been advertising them. They're 38mm round screw together bola slides for coins or stones. Gold or silver color.
COMPLETE CABOCHON OVAL 30 X 40 MM BOLO
COMPLETE CABOCHON ROUND 38 MM BOLO
SLIDE CABLESS EAGLE BOLO
SLIDE CABOCHON 18 X 25 MM BOLO