molded fiberglass grating

It was not until the development of the hydraulic drifter in the 1950s that rock drilling truly entered the modern eradrifter for rock drill. This innovative tool used high-pressure hydraulic fluid to power a piston that rotated the drill bit, allowing for much greater penetration rates and precision. The hydraulic drifter quickly became the go-to tool for drilling holes in hard rock, paving the way for many of the major engineering projects of the time.

...
...

The durability and strength of a rock drill shank adapter are critical factors in its performance. Typically made from high-strength alloy steel or tungsten carbide, these adapters are engineered to resist deformation under high pressure and extreme temperatures. They often feature a male thread on one end to attach to the drill rig and a female thread on the other to accommodate the drill bit. The threading design ensures a secure and precise fit, reducing the risk of slippage or disconnection during operation.

...