Do Rotary/Percussion bits cut faster than Rotary-only bits?
Yes. Rotary-only bits do not break up the concrete, but actually grinds it under operator pressure. What is A.N.S.I.? Relton Corporation follows A.N.S.I. standard B212.15-1994 where applicable. This standard was developed to insure maximum holding power of concrete anchors by matching drill tolerances to anchor dimensions. For more information on A.N.S.I., visit their home page, ansi.org.