Features 1、One connecting handle body corresponds to multiple tap socket, which can quickly switch tap specifications and improve work efficiency 2、Standard production of alloy material, easy to switch, suitable for drilling machine processing 3、The product support easy and fast installation, clamping accuracy can reach 0.02mm 4、Install the tap socket into the connecting handle body, install the tool and start tapping work 5、Fast change tapping chuck set come with stable structure, excellent performance and long service life Specification Item Type: Fast Change Tapping Chuck Set Model: J4012B16 Material: Alloy Applicable Machine Tool: Drilling machine Clamping Accuracy: 0.02mm Hardness: HBC 45-48 Clamping Range: M3, M4, M5, M6, M8, M10, M12 Package List 1 x Connecting Handle 1 x M3 Tap Chuck 1 x M4 Tap Chuck 1 x M5 Tap Chuck 1 x M6-8 Tap Chuck 1 x M10 Tap Chuck 1 x M12 Tap Chuck