Pneumatic Stone Engraving Pen Tool Kit Stone Carving Tools - 5500 BPM Professional air-powered carving pen for stone, rock & sculpture work. Complete with fittings. ✔ 5500 BPM POWER - High-impact performance for chiselling & carving stone surfaces. ✔ WORKS WITH MOST BITS - Compatible with various alloy bits for roughing & finishing. ✔ FITS STANDARD AIR COMPRESSORS - Connects easily (70-95 PSI needed). ✔ FOR STONE ART & LETTERING - Perfect for relief shapes, hollow lettering & detailing.
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