Material: hard metal This bit is used for drilling tiles, glass, ceramic, concrete, stone, brick and diamond. Specifications: Dimensions: 6mm, 6mm, 8mm, 10mm, 12mm Packaging: transparent plastic box Stem type: triangular stem Quantity: 10 pieces product features: Tip openings are clean, smooth and free of rough edges Easy to spot, perfect chip conveying effect The carbide has a reinforced head to prevent breakage and ensure a longer life The tip has a high hardness and wear resistance < br / > We do not recommend the use of tips with a lithium content below 24 V and the performance is insufficient Package contents: Orange Overlord Diamond * 5-Piece Set (6mm, 6mm, 8mm, 10mm, 12mm) Black Triangle Drill Bit * 5-Piece Set (6mm, 6mm, 8mm, 10mm, 12mm) ) The results suggest: 1. The best effect is to add water to the drill bit, which can greatly extend the service life. 2. The following materials can be dried directly, such as red diamond, concrete, foam brick, antique brick, iron, copper,
