Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K Ring Mountings 000 RPM with power to

000 RPM with power to handle nearly any material without stalling or slowing under normal load

The Carbon Ring Stick On Stand is a practical bench tool designed to hold rings securely during soldering operations

Supports metal workpieces while allowing controlled deformation during shaping

726) provide additional working room

Ready for stone setting and sizing straight from the package

Gold Test Needles-Set Of Five-8K-10K-12K-14K & 18K Ring Mountings 000 RPM with power toGold test needles are an essential tool for jewelers and precious metal buyers who need to verify the karat purity of gold items using acid testing. This set includes five needles spanning the most commonly encountered gold karats 8K, 10K, 12K, 14K, and 18K giving you a comprehensive reference range for comparative acid testing. To use, select the appropriate karat needle and rub or scratch it against a test stone. Make a second mark on the stone with