The teeth are in two different sizes alternating in a 4/6 pitch (4 large teeth for 6 small teeth) to optimize the cutting quality- The bimetal structure offers the advantage of teeth cut from a harder steel (M 3)- different from the steel of the saw body- Teeth stay sharp longer- The base of the bell is made of steel thicker than the edges- preventing saw deformation and providing better thread retention for the mounting shaft- Uses: for drilling in sheet metal- wood- chipboard- gypsum

TREPHSS22 : Ø 22
TREPHSS29: Ø 29
TREPHSS35: Ø 35
TREPHSS44: Ø 44
TREPHSS51: Ø 51
TREPHSS64: Ø 64