Warranty: Speed in 800-1000 per minute, keep adding water to keep the drill cool, strictly prohibit from dry drilling! Customer care Quality problems occur within one year replacement, lifetime warranty, if you're not completely satisfied, then CONTACT US and we will giveyou a 100% refund within 90 days of purchase. It is our intention to offer the BEST customer service on Why Fit you Good Performance and long life : Diamond dust coating offers superior performance and cutting strength Wide application : Suitable for Drill Glass, Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone and only needs water for lubrication Product Specification: Category: Type: 16pcs Diamond Coated Drill Bit Material: High strength carbon steel Color: Silver Specifications (Diameter): 3mm, 4mm, 5mm ,6mm,7mm, 8mm,9mm,10mm, 12mm, 14mm, 16mm, 18mm,22mm,30mm,40mm,50mm Why choose Us? We will Provide High Quality items with Patents Supports. Any issue you are facing , Please feel free to contact Us. Your opinion have great value for us.
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