Shars 1/32 to 3/8" ER16 Collet 10 PCS Set 202-6490 S[

Hole Dia: 1/32 - 3/8" (1/32, 1/16, 3/32, 1/8, 3/16, 7/32, 1/4, 5/16, 11/32, 3/8) Runout Tolerance: 0.0003" 10 Pieces Conform to DIN6499B All fractional size is true imperial size, not a metric conversion size