419 Pc. Rubber O-Ring Universal Metric Hand Tools~Cutters Strong magnetic base maintains a

Strong magnetic base maintains a fixed position

Heat Treated High Speed Steel (HSS)

Important Mounting Note (Plain Back): This chuck features a "plain back" design

Material: High-Speed Steel

419 Pc. Rubber O-Ring Universal Metric Hand Tools~Cutters Strong magnetic base maintains aRubber rings seal like mini gaskets 32 most used sizes for plumbing, automotive, general repair Material: 50% rubber, hardness: 70 Degree. 20 R 01, 20 R 02, 18 R 03, 23 R 04, 23 R 05, 23 R 06, 14 R 07, 13 R 08, 14 R 09, 13 R 10, 14 R 11, 14 $12, 13 R 15, 10 R 16, 10 R 17, 10, R 18, 10 R 19, 10 R 20, 10 R 21, 10 R 22, 10 R23, 10 R 24, 10 R 25, 10 R26, 10 R27, 10 R 28, 10 R 29, 10 R 30, 10 R 31, 10 R 32