DIAEDGE ROCK TOOLS are manufactured from highly wear resistant steel and our own in house Japanese produced tungsten carbide inserts. These tungsten carbide inserts are designed and produced by experienced engineers using the most advanced technology.
We continuously engage in research and development activities to meet our customers' needs with high-performance tools that maximize the performance and economy of varied types of machinery under all kinds of operating conditions

The origin of DIAEDGE ROCK TOOLS is our own mining business from more than 140 years ago.DIAEDGE ROCK TOOLS is set apart from the others with in-house produced carbide buttons using a technology that has been cultivated for many years.The products offer solutions that achieve the customer’s target in both open-pit and underground mining.

Due to mountainous geographical conditions in Japan that requires a lot of tunnel construction, we have been one of the leading experts in tunneling in the world.
DIAEDGE ROCK TOOLS offers a full range of products for advanced technology in tunnel engineering all over the world.

DIAEDGE ROCK TOOLS provide the best solution for all types of applications in construction, including civil engineering projects, tunneling, surface drilling, anchoring, foundation projects, and piling.

DIAEDGE ROCK TOOLS is one of leading brands in the stone/aggregate industry. Our products give better efficiency with high penetration rates and less hole-deviation.

DIAEDGE ROCK TOOLS has a unique product lineup for the water well and piling industries.For overburden drilling we offer world class Super Max Bit (SMB) and Ultra Max Bit (UMB) products in addition to conventional DTH bits.SMB and UMB products provide our customers to install casing or piling with ease in all types of rock formations and hole depths.

We offer extensive lineup of rock drilling tools with cemented carbide inserts used in quarries, mines and construction sites.

Durable tapered socket bits and Integral drill steels are available from 30mm (1 3/16”) to 43mm (1 11/16”) in diameters with your choice of 6°, 7°, 11°, or 12° taper.

DIAEDGE ROCK TOOLS for small/ medium sized drill holes for drifting are available with extensive range of size and design by threads type in the market.

DIAEDGE ROCK TOOLS for bench and long-hole drilling are available with extensive range of size and design by popular threads type in the market.

We offer a wide assortment of Down The Hole bits, from 90 mm to 254 mm for different kinds of hammers.

The SUPER MAXBIT consists of two or three wings on a device. Bit wings become extendable / retractable when drill strings rotate in the forward / reverse direction.

The SUPER MAXBIT G-MODEL consists of two or three wings on a device same as SUPER MAXBIT, The G-MODEL provides optimum efficiency when drilling hard rock formations.

The ULTRA MAXBIT is used for simultaneous drilling and casing in unstable soft ground formations, such as sand, gravel and boulders.