Malco VFN2 Vinyl Fencing Rail Notcher Creates 3/4-inch wide 7/8-inch deep, louver-shaped tabs in vinyl fence rails, locking the rails in place Durable yet lightweight hardened steel frame Ergonomic redline handles with unique one-hand operation latch offer maximum compound leverage performance and natural fit and feel Optimum compound leverage design aids in reducing user fatigue Works in cold down to 40-degrees F and heat up to 120-degrees F