Features:

• The blue arrow at the 12:00 o'clock position indicates the park position for the cover when not in use. This is a firm 'click' position and cannot be moved accidentally, preventing spilling of the grids.
• The clear cover can be rotated smoothly through 360° once the slight initial resistance of the park position has been overcome exposing a maximum of 2 or 3 diamond shaped holes at any one time.
• The materials have been chosen for their anti-static properties, the clear cover also has self-lubricating properties which reduce friction, enabling the cover to move freely while remaining in close contact with the face of the base.

Grid Record Keeping Card:

Each SPI Twist-A-Grid? Storage Box is accompanied with a convenient grid record keeping card and a plastic polybag for safe storage. This is true for when the boxes are sold individually or in bulk packaging.