Bosch 2609390588 HSS-G Standard Hole Saw Arbour with 9.5mm Hex Shank 14-30mm The Bosch 2609390588 Hexagon Adaptor is designed for use with Standard Hole Saws with diameter 14-30mm. It connects the hole saw to the power tool with a mandrel and is suitable for use with all corded and cordless drill drivers. Features: Hexagon Adapter connects the hole saw to the power tool Suitable for use with all corded and cordless drill drivers HSS-G is strong, durable and long lasting Specification: Fits Hole Saws: 14-30mm Shank Size: 9.5mm Shank Type: Hex