Step twist drill bit High speed steel
USD $1 - $10 /Piece
Min.Order:100 Pieces
Zhenjiang Scharp Machinery Tools Co., Ltd.
Drill Diameter Sizes (inches) | Number of Hole Sizes | Size Increments (inches) | Step Thickness (inches) | Shank Diameter (inches) |
1/8 to 1/2 | 13 | 1/32 | 1/8 | 1/4 |
1/4 to 3/4 | 9 | 1/16 | 1/8 | 3/8 |
1/4 to 7/8 | 11 | 1/16 | 1/16 | 3/8 |
1/2 to 1 | 8 | 1/16 | 1/8 | 3/8 |
1/4 to 1-1/8 | 16 | 1/16 | 1/16 | 3/8 |
3/16 to 1/2 | 6 | 1/16 | 3/8 | 1/4 |
1/4 to 1-3/8 | 10 | 1/32 | 1/8 | 3/8 |