Operating skills: Positioning firstly when punch for smooth objects. When punch for the harder objects, make a hole with a small dril firstly, then expanded it to a larger hole. It is normal if it is a little tight when matchs with 2.0 grill, just force open the chunk a little. Note: Wearing protective tools when use it and pay attention to the emergency situation. Please keep the exertion directions are always perpendicular, or the drill bit is easy to be broken. This product is not suitable for drilling on agate, jade, metal, steel and other hard materials, slip or unusable may happen. Specifications: Structure: the body is steel, the chuck is alloy metal, the main stem is spiral and equipped with backspring. Chuck clamping range: 0.2-2.0mm Use shank typer: round handle The shape of the drill shank: round only Drill Specifications: 0.6 / 0.7 / 0.8 / 0.9 / 1.0 / 1.2 / 1.4 / 1.6 / 1.8 / 2.0mm Package Included: 1pcs handle, 10pcs drill
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