Kerf Cutter - Valve Box Repair tool KitKerf Cutter makes repairing broken valve boxes quick, easy and long lasting. No pavement cutting or digging. No longer is there a need to bring in costly and dangerous heavy equipment to cut asphalt, dig out the broken section of the road and patch the pavement only to see the road settle months later and having to fix it again next year. Kerf Cutter is the latest innovation for municipal water and street departments to fix broken valve boxes. Kerf