VEVOR Pneumatic Jewelry Engraver Machine 110V 60Hz Pneumatic Hand Engraving Machines 400-8000 Rpm DKJSTQD0000000001V1

VEVOR Pneumatic Jewelry Engraver Machine 110V 60Hz Pneumatic Hand Engraving Machines 400-8000 RPM DKJSTQD0000000001V1 617201604267 Double-Head Jewelry Pneumatic Engraving Machine Effortless Operation & Adjustable Speed & Durable Material The pneumatic graver tools feature 400-8000 strokes per minute are flexible convenient & efficient and can adjust the machines speed. In addition there is a throttle bias adjustment valve for tailoring throttle response and a dual-stage precision air r…