Slips

Wedge-shaped pieces of metal with teeth or other gripping elements that are used to prevent pipe from slipping down into the hole or to hold pipe in place. Rotary slips fit around the drill pipe and wedge against the master bushing to support the pipe.
Power slips are pneumatically or hydraulically actuated devices that allow the crew to dispense with the manual handling of slips when making a connection.
Packers and other down hole equipment are secured in position by slips that engage the pipe by action directed at the surface.

    

Tongs

The large wrenches used for turning when making up or breaking out drill pipe, casing,tubing, or other pipe; variously called casing tongs, rotary tongs, and so forth according to the specific use.
Power tongs are pneumatically or hydraulically operated tools that spin the pipe up and, in some instances, apply the final makeup torque.