Handheld type electric drill (HAND DRILL) Classified tools, because they carry. Use the General size of hole drilling drill has grown less than 10 millimeters, such as drilling, wood drilling steel. Drilling concrete if concrete penetration must be subjected to type drill. Drill can crack change based on head crack drill called the Hill and flowers rotate out drilling wood and iron, using the same type of drill. Best concrete penetration Use of drilling concrete, especially The secret, the secret to drill according to the defined angle.Drill SDS Max shank portion consists of Trunk and end at the end of the drill secret, sharp, and the angle of the drill must be valid. If the angle is not valid will not be able to penetrate the material work. Divided as follows:1. drill SDS drill, drill, drill is suitable for round electrical gear and use the drill steel and wood. 2. drill SDS Max shank with tapered rectangular brace.3. twist drill with a style pallet Plai Laem. The sides have two sharp sharp. Side sharp as cut eat wood Apply brace4. concrete drill bits Used for drilling concrete, especially
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