21PC 135 Degree Heavy-Duty Mechanics Length Dril Set Cle-Line 1875R Black & Gold HSS 1/16-3/8x1/64 MPN:C21161

The CLE-LINE C21161 is a mechanics-length drill bit set intended for drilling alloy steel, stainless steel, tool steel, and cast iron (as applicable to the specified drill bit material and point/helix geometry). It features 21 high-speed steel drill bits with sizes ranging from 1/16 inch to 3/8 inch, measured in fractional inches. The set includes drills with a split point and a 135-degree point angle, intended for right-hand cutting. These bits come with a black oxide finish and are included in a metal index case for storage.

Key Features:

• - Number of drill bits: 21, covering sizes from 1/16" to 3/8" by 64ths.
• - Material: High speed steel for machining all materials listed.
• - Shank type: Straight with three flats, with straight shank featuring three flats.
• - Flutes: 2 spiral flutes with a helix angle ranging from 21° to 34°.
• - Drill bit length class: Mechanics-length.
• - Cutting direction: Right hand.
• - Point type: Split point with a 135° point angle for effective cutting.
• - Finish: Black oxide coating.
• - Depth-to-diameter ratio: 4xD.
• - Drill bit case: Metal index for storage.

Additional Information