Malco VFN1 Vinyl Fence Hand Notcher – 1 2″ Hatchet Straight thumb design for better Straight thumb design for better grip with less wear on stitching 9 mm)Cutting Knives: StandardCut Style: StandardJoint Type: LockingHandle Color: BlueHandle Finish: Plastic DippedHandle Length: 7 3 8'' (187 The VFN1 & VFN2 Vinyl Fence Notching Tool create 1 2 and 3 4 inch (13 and 19 mm) wide and 7 8 inch (22 mm) deep louver shaped tabs in the end sections of vinyl fence pickets or rails The resulting raised tabs facilitate a durable lock that prevents the picket or rail from pulling out of the joint opening in a rail or fence post during high winds or abrupt blows