Power Scraper : HK1820 Adapted for SDS-PLUS bits Compact and lightweight. One-touch sliding chuck. - Vibration absorbing handle ensures more comfort and control and less f atigue. - Barrel cover allows for comfortable barrel gripping. - Large trigger switch with variable speed control function. - Variable Speed Control by Dial enables to adjust scraping power to the material of subfloor/ subwall. - Chisel rotates full 360 degrees with 12 different locking positions. - Carbon brush : CB-350