VERY100 Brass Collet 5pcs 1.0mm 1.6mm 2.3mm 3.0mm 3.2mm Shank 4.3mm Rotary Tools Shank Dia:4.3mm Overall Length:17mm/17mm/19mm/17mm/17mm Material:Brass Color:Golden Package Content:5 x Collets(1pc of 1 size) Inner hole Diameter:0.04",0.06",0.091",0.12",0.126"