Insert Bit Holder Chuck Extension Rod Adapter 60mm 100mm 150mm High Accuracy for Bits Conversion Specification: Item Type: Extension Rod Adapter Material: steel + stainless steel Color: Black + Silver Extension Rod Length: Approx. 60mm / 2.4in 100mm / 3.9in 150mm / 5.9in Handle Type: Hex handle Handle Size: 1/4in Package List: 3 x Extension Rod Adapters