The coupler is typically made of steel or other durable materials and is designed to transmit torque or rotational force between the two shafts or rods. It can accommodate misalignment between the two shafts, which helps to reduce wear and tear on the equipment and prolong its lifespan.

Couplers with pins are commonly used in machinery and equipment such as industrial conveyors, pumps, and generators. They are also used in agricultural equipment like tractors and other heavy machinery.

The pin used to secure the coupler is typically made of steel and is designed to withstand the stresses and forces of the application. It is inserted through holes in the coupler halves and through the ends of the shafts or rods, locking them together and ensuring a secure and reliable connection.