Pneumatic Engraving Machine Jewelry Engraver Double Ended 2 Hand Pieces US Shipping ADJUSTABLE AIR PRESSURE GUAGE: Also capable of adjusting the strokes per minute. Great for use on a variety of materials such as wood, metal, precious gems, and jewelry. FOOT PEDAL CONTROL: Leaves your hands free, cuts down on fatigue, and speeds up production. 2 DIFFERENT HAND PIECES: 4 cm round collet, Triangular collet, No shanks/bits/burrs included. SHIPPING: Ship from our Cleveland OH warehouse with an estimated delivery time of 2 to 5 business days. Expedited shipping is also available.