MIYANAGA
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Carbide tips jointed with a special technology

Realizes stable drilling with minimal occurrence of bit binding and shock.

Realizes stable drilling with minimal occurrence of bit binding and shock.

Reduced strain on workers' body leads to less fatigue even after long hours of use.

Drilling a hole to a perfect roundness

Anchor pullout test (Comparison with our product)

More accurate hole starting without bit walk

The chisel point at the blade edge of the Deltagon bits has been eliminated, and thus hole starting is easy. (Minimized bit walk during hole starting allows smooth drilling.)

More accurate hole starting without bit walk

Improved performance against reinforcing bar

Minimized bit binding with reinforcing bars realizes higher durability than conventional bits.

Drilling through deck plate

The Deltagon bits can easily cut the deck plate on which concrete was poured.

The Deltagon bits can easily cut the deck plate on which concrete was poured.

Minimum wear of the outside cylindrical surface

Comparing the wear of blade edges

The Deltagon bits have the advantage that the amount of wear of its outside cylindrical surface is extremely little in comparison with bits with two edge. It is most suitable for drilling pilot holes for anchors.

* This test results are only an example and may differ depending on work materials and an electric drill you use.
Test data: Bit diameter 19.0mm (3/4") (Hex shank bit)
Work materials: Concrete with a compressive strength of 300 kgf/cm2
Drilling length: 100mm (3-7/8")

Features of the Delta shank