Abstract: A rectangular one-piece unitary block of hard durable material has a central slot opening through one side and the bottom. The depth of the slot measured from the bottom of the block to the slot base in the interior is greater toward such one side. The slot becomes progressively more shallow in a direction toward the opposite side of the block to a location where the slot feathers into the bottom. The head of a high fastener projecting from an exposed edge of a T & G plank can be captured in the deeper portion of the slot, followed by shifting the block with its bottom engaged against the plank and the fastener head engaged by the base of the slot while rapping the top of the block with a hammer. The high fastener is thereby progressively driven to a set position.

Abstract: A rectangular one-piece unitary block of hard durable material has a central slot opening through one side and the bottom. The depth of the slot measured from the bottom of the block to the slot base in the interior is greater toward such one side. The slot becomes progressively more shallow in a direction toward the opposite side of the block to a location where the slot feathers into the bottom. The head of a high fastener projecting from an exposed edge of a T & G plank can be captured in the deeper portion of the slot, followed by shifting the block with its bottom engaged against the plank and the fastener head engaged by the base of the slot while rapping the top of the block with a hammer. The high fastener is thereby progressively driven to a set position.