Plastic Core Blocks are a 'block', as the name implies. These are essentially the direct equivalent of the old industry standard wooden core blocks, but made from plastic. Simple as that. They have an etched top surface perfect for writing with a permanent marker pen.

Maximize the use of your core trays by separating the core quickly with these Plastic Clip-in Core Markers. They are color-coded to identify specific core sizes, and come with an etched flat surface to allow you to record notes permanently. Made to suit every size BQ, NQ, HQ and PQ of Discoverer® Core Trays.