Step drill, the overall carbide stepped drill, step twist drill, non-standard step drill manufacturers, Changzhou 90 degree ladder drill which wholesale

Threaded bottom hole with 90-degree step drill Features:

Material: Solid carbide, uncoated; Drilling depth: 2-3 times the diameter, cooling: external cooling; Shank type: D2 shank; Scope: Suitable for cast iron, aluminum drilling.

Related to the overall carbide drill bits can be processed gray cast iron, medium hardness cast iron, gray cast iron, malleable iron, ductile iron, aluminum and other variety of bits to choose from.