Big sale Wrench Drill Chuck Steel Conversion Kit Heavy Duty with 0.08 Accuracy 1/321/2JT33

1、Special processing of hardened key parts increase durability of the wrench drill chuck. 2、The jaws are specially designed to achieve balance when use this drill chuck. 3、High accuracy good rigidity waterproof and anti?rust the wrench drill chuck is durable after a long time use. 4、The hardness is 44-48HB the wrench drill chuck is suitable for many machine tools. 5、Wrench-type drill chuck is easy to install especially easy for novices to learn.