CRL 3M® Trizact® 3" A35 PSA Polishing Disc Circular Saw Blades They have 100% polyester backing

They have 100% polyester backing that lets you use them wet or dry

CRL 360 Degree See-Thru Security Domes are made of acrylic which is vacuum coated with a bronze mirror coating that is transparent only from the dome's interior

Tool is machined from one piece anodized aluminum for reduced weight

Although considerably more expensive

It has a mini "Clamp Only" design with a jaw opening of 152 mm (6") is handier for smaller jobs where the spreader feature is not required

CRL 3M® Trizact® 3" A35 PSA Polishing Disc Circular Saw Blades They have 100% polyester backing3M Trizact A Cleaner, Long Lasting Abrasive System for Glass Scratch Repair Starter and Professional Kits are Both Easy to Use Several Grades Available CRL introduced 3M Trizact Abrasive Film to the glass industry. This material uses natural abrasive formed in the shape of small pyramids, and provides uniform layers of abrasive throughout the pyramid. As abrasive particles are exposed and used, they fall down and are flushed away between the pyramids.