Portable Stained Glass Grinder Machine Glass Ceramic Grinding Tool Kit For DIY CraftMini Glass Grinder MachineComes with 4 grinding bits (Blue) NEW Efficient Diamond Grinder 4 Pcs Pure Brass Drill Bits 1inch 1/4inch 3/4inch 1/8inch Flexible Diamond Drill That Leads Longevity Higher efficiency lower decibel More stable longer life 304 Stainess Steel Motor Shaft Never Rust with water Wider Working Surface: 22cmX27cm Easy Operation More Proficient Longer Durability With The Full Using Of Drill Easy to assemble Wide Usage: Can work with Stained Glass and all the other Glass, Ceramic, Marble etc. Adavantage: Come with 4 different size of grinder bits ( 1", 3/4'', 1/4'', 1/8'' ), just need to replace the grinding bits according to your needs. Portable Stained Glass Grinder Machine, Glass Ceramic Grinding Tool Kit For DIY Craft Character: DC motor, Strong Power, Rust-Proof ( Stainless Steel Motor Shaft ), Safe Wateproof Switch Design ( Avoid Leakage ). Equipped with big Bezel which can well prevent the dust splashing and protect your eyes when you work on it. Customer Service: If you have any questions or encounter any issues with this glass grinder, please contact us anytime.