Superior Electric M66 Japanese Carbon Brush Set Replaces DeWalt 445861-20 & 445861-18 Replaces DeWalt 445861-20 and 445861-18 Fits most DeWalt and Porter Cable Power Tools Dimensions (LxWxH): 0.52 inch x 0.23 inch x 0.26 inch Material: JAPANESE TOYO TANSO Carbon