【PROFESSIONAL GLASS ANGLE GRINDER】： 4000RPM automatic water stained glass grinder - dual layer grinding platform: Upper layer for rapid shaping (coarse grinding), lower layer for precision work (edge refinement/hollowing/drilling). Includes 2 interchangeable work Face - compact 14×11cm (5.5×4.3in) and extended 25×21cm (9.8×8.3in) - perfect for most stained glass DIY projects 【4-SIZE GRINDING HEAD SET】： Professional kit includes 4 diamond-coated bits: 5/8" (bulk removal), 1/4" (contouring), plus 2pcs 1/8" heads (standard & conical) for detailed engraving 【AUTOMATIC WATER FILLING FUNCTION】： When using this art grinding tool, the grinding head will stay wet, eliminating concerns about dust and glass temperature rise. No need to use other water supply devices, enables uninterrupted use during the creative process.(Both layers support continuous water supply function) 【DOUBLE-LAYER GRINDING DESIGN】： Double-layer grinding supports different grinding effects, hollow grinding + minimum 2-3mm drilling + curved edge grinding. Install different grinding heads to achieve small arc and semicircular grinding. More functions can enrich your ideas and creativity 【GRINDING & CRAFTING OF HARD MATERIALS】- Craft crafting kit is widely used in glass, mosaic tiles, jewelry processing, art and decoration.Perfect for beginners/glass artists/students /classrooms/DIY enthusiasts, Manufacturer: RSQQL