1.This hole saw drill bit suits for angle grinder. Longer working life, fast and smooth drilling. 2. The diamond hole saw drill bit set can be used both dry and wet, meet your various needs, recommended adding some water to prolong the service life. 3. Dry/Wet Cutting.This hole saw bit can be cut arbitrarily in wet or dry to meet various user environments. A little water will make it smoother. 4. Easy To Operate，First, keep the hole drill at a 45-degree angle, and then continue drilling at a 90-degree angle with the horizontal surface. It is easy to install and operate conveniently. #JohnsonToolsManufactory #JohnsonTools #diamondtools #diamondsawblade #continuoussawblade #cuttingblade #concretecuttingdisc #concretesawblades #diamondsawblades #concretesawcutter #diamondsawblades #diamondcutterforconcrete #drywallblade #wallchasingblades #wallcuttingwheel #diamondbladecutrebar #diamondcutcement #diamondsawconcrete #cuttingasphalt #asphaltblade #asphalt saw #asphaltcuttingblade #asphaltsawblade #asphaltluteblade #asphaltconcretesaw #5flooringsaw ... https://www.youtube.com/watch?v=C8UxOnBZ8dY

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