Merge the greater clarity of writing on grey paper with sharing technology and you have Whitelines! These pads have 80 sheets of grey background engineeering grid paper. The paper has Whitelines technology, which, when combined with the free Whitelines mobile phone app, will create an instant elelctronic file of whatever is on the page, while eliminating all background not on the paper. Full pallet of 63 cases of 24 engineering pads, 1512 engineering pads total.