Feature

●Effective length: 4.7 inches (120 mm)
●Compatible Materials: Mortar, blocks, untucked concrete


Description

Product description

For drilling concrete, blocks, mortar, and kiln siding. Features: Outstanding durability (compared to manufacturer). Increased perforation speed (compared to manufacturer). Can be drilled close to a true circle. Specifications: Compatible electric motors: electric drill (please use with vibration drill).

Amazon.com Review

●真円に近い穴あけを実現
●位置決め性能が向上