Plated metal cone with hinged cutter blade set in slot and metal handle.
For borer dia. 4-27mm.
Borer restored to circular shape by cone, edge cut to correct angle by depressing blade using thumb pressure.

Chemistry School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Cork Borer Sharpener Cork and Tubing Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Chemistry Lab Equipment for Engineering Teaching Lab in Universities