Round Acid Bottle Glass

Bench peg has a v-slot for sawing and a ring holding support.
2 oval grooves in the middle that are used as storage traps

Unique design allows a nice grip- simply interchange the blades for prong opening and setting.

Set of 2 tool that fits into a standard 3/32” shank bur.
It ensures a standard cut every time you set gemstone in channel or prong.