The E-line series is an all-round resin bond tool for handheld machines with velcro back ranging from surface leveling and grinding down to the finest steps of polishing. The E-line series is a good choice for dry-processing of natural stone such as marble, terrazzo and limestone. This tool is also perfect for honing and polishing of staircases and bench tops. Recommended speed is 3800 rpm. The tools are color coded with HTC standard colors.