<h5>Orange Smartfloor DOI inserts for general maintenance and cleaning.</h5> The SmartFloor DOI pad is used for daily maintenance on polished concrete floors. It is used in conjunction with Ameripolish PoliSmart CS Cleaner using an auto-scrubber and is available in standard sizes. Daily usage will increase the floor's DOI. The SmartFloor Stain Remediation pads are used to remove etching and staining on polished concrete floors. It is used with an auto-scrubber and is available in standard sizes. <h5>FEATURES:</h5> For use on concrete floors protected by SR2 SB or WB penetrating sealer only Used along with standard janitorial equipment Made of unique diamond agglomorate technology Special inserts plug directly into ""backer pads"" DOI inserts are used for daily cleaning to maintain DOI (distinctness of image) Stain Remediation Inserts (SRI) are used for etch / stain removal <div style="background: #0073aa; color: white; padding: 10px 15px; font-size: 18px;">Free Shipping for all diamond orders over <strong>$300</strong> in value. Non-diamond items are not included.</div>