Wera Tools LLC

Drive 1/4 inch HEX Counter Sink Size 6.3 x 31 mm

Wera Tools LLC

8-Piece 1/4HEX Replaceable Bit Driver Countersink Bit Set with Case　104650

846/8 series.
High quality 3-flute counter sink bit 8-piece set.

Wera Tools LLC

8-Piece 1/4HEX Replaceable Bit Driver Countersink Drill Bit Set with Case　104655

845/8 Countersink Drill Bit Set.
8-piece countersink set in a sturdy plastic box.

Wera Tools LLC

Countersink Drill Bit Size M3 x 32 mm