GEARWRENCH Ratchet Bit Set GWMSMBS01 105 Piece 1 4 Inch Drive Slim Head (72 Tooth 9 Position Locking Flex Foam Tray S2 Steel Driver Tool) 100' 0 inches Grit Rating 100 0 inches Grit Rating 100 Grit Segment Count 5 Raised Segments Bond Matrix Type Copper Metal Powder and Synthetic Resin Hybrid Attachment Type Industrial Hook and Loop (Velcro Backed) Operating Mode Wet Recommended Target Substrate Medium Concrete Floors and Terrazzo Compatible Machinery Husqvarna PG Series Planetary Grinders Product Weight 0 and a compact footprint 49 inches thick to clear tight physical obstructions where standard 1 4 inch ratchets bind Full Polish Nickel Chrome Plating: Mirror chrome finish on alloy steel components resists rust and wipes clean of motor oils and grease