0.3-3.2mm M7/M8x0.75mm Keyless Chuck Universal Chuck For Electric Grinder Drill Adapter

Description: 0.3-3.2mm M7/M8x0.75mm Keyless Chuck Universal Chuck For Electric Grinder.    The meaning of the 7x0.75/8x0.75: 7/8 refers to the Dremel grinding machine shaft outer diameter is 7mm/8mm, 0.75 is screw thread pitch 0.75mm, your Dremel grinding machine shaft outer diameter measurements is 7mm or 8mm, you can consider it.    Specifications: Material:plastic+metal;  Short chuck size:1.8x1.4cm(L x W);  Long chuck Size:2.2x1.1cm(L x W);  Inner Diameter:0.6cm;  Gripping range:0.3-3.2mm(M7);  Gripping range:0.3-3.5mm(M8);    Size: M7 x 0.75mm /  M8 x 0.75mm;  M8 x 0.75mm specification can be equipped with electric grinder and  flexible shaft output shaft diameter of 7.9mm.  M7 x 0.75mm specification can be equipped with electric grinder and  flexible shaft output shaft  diameter of 6.9mm.    Feature: Keyless Drill Bit Chuck Quick Change Adapter Converter.  Faster Bit Swaps Multi Chuck Keyless for Rotary Tools.  Multi Keyless Chuck For Shaft Rotary Tools.  This multi chuck allows y