Marshalltown 719SD Notched Trowel 3/4 x 9/16 x 3/8 U-Durasoft Handle Notches developed in conjunction with NTCA Technical Comillimeterittee The hardest blade available, making them last longer Notch style and size help to control depth and amount of adhesive applied Cast aluminum alloy mounting is securely attached with rivets to the tempered steel blade