10" Countersink Extension
Needed for countersinking the battery box on the RV-14 and useful anywhere a countersink is down in a pocket or up against a flange or web.
- Shaft is 5/16" 303 Stainless Steel
- Hex end is Zinc Plated Steel with 120deg. taper machined onto 1/4"-28 thread to seat countersink cutter in perfectly.