lakimi Air-Free Pneumatic Engraving Machine - Dual-Head Pneumatic Impact Engraver for Jewelry and Metal Crafting, Jewelry Making Engraving Machines & Tools AT03 Lk-at03 is up for auction in Arts, Crafts & Sewing. The current bid is $12.66, 98% below the $719.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.