L-shaped design is ideal for wet and form-to-form screeding Curled edges help concrete roll forward to level high spots and fill low spots Aluminum alloy material can withstand prolonged vibration Available in a wide range of sizes Option for one- or two-hole mounting on 16 board for attaching one or two Power Screeds The 4.5 ft. option is the perfect size for screeding sidewalksFits both the MARSHALLTOWN Shockwave and Speed Striker Made in the USA with Global Materials