similar title to button tooth bit could be toothed button bit for

FRP manhole covers are not merely utilitarian plates that shield underground utilities; they embody a confluence of technology and design. Crafted from a composite material of fiberglass and resin, these covers boast superior strength-to-weight ratios, trumping their traditional counterparts. Their lightweight nature ensures ease of handling during installation and maintenance, while their durability promises years of reliable service.

...

Firstly, the strength-to-weight ratio of fiberglass is unparalleled. Despite being lightweight, these tanks can withstand immense pressure and loads, making them suitable for storing heavy liquids or substances under high pressure. Their robust structure allows them to endure extreme weather conditions, corrosion, and physical impacts without degrading or leaking, ensuring a safe and secure storage solution.

...