Lot · Carpentry, Woodworking
Antique Convalco Expansion Bit Adjustable Wood Boring Carpenter Tool
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Fri · Jul 17, 2026
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Condition
Used
Condition tiers
New
Used
Refurbished
Damaged
Unspecified
Ships from
ZIP 175**
thetradesmanscorner
2,701 ratings · 100.00% positive
Description
From the sellerMaker: Convalco. Feed screw is in great shape as well as the boring end. May need sharpened. These bits were commonly used with brace drills and other hand-powered boring tools for construction, timber framing, cabinetry, furniture making, and general carpentry applications.
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