9" hole spacing that fit competitor models 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 ScreedsThe 4.5 ft. option is the perfect size for screeding sidewalks Made in the USA with Global Materials