Heavy duty industrial grade 400mm forged carbon steel F-shaped bar clamp, mainly used for clamping pieces of wood while joining with glue or fastening with screws.
Consists of a fixed jaw and a movable jaw with an attached spindle, that together slides along a rail bar. This allows the clamp opening to be set accordingly, typically to the size of the work piece.
A thermoplastic rubber handle provides a comfortable grip when rotating the spindle, which in turn controls the final clamping pressure.
In addition, the tip of the spindle has a swivel pivot, to ensure a tight grip even in irregularly shaped work pieces.
The clamping plates of the jaws are covered by plastic pads for protecting the work piece. It still is recommended, though, to insert a thin scrap of wood between the work piece and the jaws on both sides, for added protection and leverage.
The rail bar is 22mm wide x 6mm thick, tough enough for most basic home improvement jobs.
Best for wood working joinery, particularly for securely holding while curing glued joints.