Make hole saw bit changes quickly and easily with the Milwaukee 3/8 in. Large Thread Quick Change Arbor. It doesn't require the use of an adapter and its universal fit is compatible with all hole saw brands. The hardened carbon steel and alloy steel composition stands up to repeated use and the tool-free operation makes bit swaps a cinch.FEATURESMade from hardened carbon steel and alloy steel for superb durabilityFits 3/8 in. and larger drill chucksDrive plate with an enlarged grip area offers easy operationQuick-change design enables tool-free bit exchangesHex shank allows higher torque applications and less slippage from your drill