Features:<br />Available in electric grinder， nail hine， engraving hine.<br />Allows Connecting rod power tools to use conventional drill bits.<br />Instantly convert impact driver to hold non-quick change drill &amp;amp; driver bits.<br /><br />Specification:<br />Ideal for :Electric grinder screwdriver<br />Type:Chuck Drill Bit Adapter<br />Material:Aluminum alloy<br />Drill Chuck Dia:0.3-3.4mm<br />Connecting Rod Dia:3mm<br /><br />How to use : First governor speed adjustment in the &amp;quot;minimum or zero turn&amp;quot;， then turn on <br />the power， adjust the speed， speed not more than 1w， to avoid damage to the shaft.<br />Caution : Once installed on this universal chuck. Please do not direct adjusted to high-<br />speed operation， or may cause the rear axle bend.<br /><br />Package Included：<br />1 x 0.3-3.4mm Drill Chuck<br />1 x Connecting Rod