•The spiral part has P.T.F.E. • Tungsten carbide head is with precise balance center point. •2 precise ground cutting edges (Z2). •2 spiral flutes
•Solid carbide drills New design with 3 cutting edges dowel drills.
•The spiral part is with P.T.F.E.
•The drill part is made of solid Tungsten carbide • It has 3 precise cutting edges (Z3).
•This solid carbide dowel drills is made of high strength steel shank • 2 precise ground cutting edges (Z2). • 2 spiral grooves. • Parallel handle, flat driving plane, adjustable screw length.
•The drilling parts is solid carbide which will improve lifetime and performance. •The steel shank has been undergoes petrochemical treatment after heat treatment to reducing deformation • 2 precise ground cutting edges (Z2) and 2 spiral grooves. • The raw materials are virgin materials and fine particles, which ensure the stability of the quality-the warranty is 365 days, the quality problems within 365 years can be negotiated and handled.