Means for releasably connecting two constructional panels to one another comprising first and second parts, wherein: the first part has a bolt; and the second part has an enclosure with an opening into which the bolt of the first part can be moved, a cam rotatable about a pivot within an enclosure between an open position and a locked position, the cam having a slot formed within it adapted to receive a portion of a corresponding bolt of the first part, the slot having a bolt engagement surface with a portion sloped at an angle to the said first dimension, the slot having a locking surface substantially opposite the bolt engagement surface.

The invention relates to an edging strip, in particular a raised floor edging strip, containing a thermoplastic material, a conductivity additive and a tribology additive. The invention also relates to a method for manufacturing the edging strip, a panel with an edging strip attached to it and the use of a tribology additive to reduce creaking.