Robert Larson 355-4040 Countersink Drills Screw Size #4 C's 5/16 Robert Larson 355-4040 Countersink Drills Screw Size #4 C's 5/16"
Features-
355-4040 Countersink Drills
• Drills the hole for the threaded and shank portion of wood screw, countersink for bevel under head, and if required, counterbore for wood plug.
• Complete with countersink, taper drill, & stop collar.
• All parts available separately.
• Size indicates wood screw sizing.
• Made in USA.

Product Specifications-
• Screw Size: 4
• Countersink size: 5/16"
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