# MarySino 1/4 in. to 1-3/8 in. HSS Titanium-Coated Spiral Flute Step Drill Bit (10-Steps)

**Brand:** [MarySino](https://shop.coreranger.com/brands/MarySino)
**SKU:** SF-MS-LL0005
**Price:** $23.99 · in stock
**URL:** https://shop.coreranger.com/product/marysino-1-4-in-to-1-3-8-in-hss-titanium-coated-spiral-flute-step-drill-bit-10-steps-342854034

## Specifications

| Spec | Value |
|---|---|
| Model # | SF-MS-LL0005 |
| Features | No Additional Features |
| Internet # | 342854034 |
| Returnable | 90-Day |
| Shank Style | Hex |
| Store SKU # | 1015924124 |
| Bit Material | Titanium-Plated High Speed Steel |
| Drill Bit Type | Step |
| Individual/Set | Set |
| Number of Pieces | 1 Piece |
| Tools Product Type | Other |
| Material Application | Aluminum,Copper,Duct/Sheet Metal,PVC |
| Drill Bit Type(s) Included | Step |

## Description

This 10-step HSS titanium-coated step drill bit features a 3/8-inch hex shank, designed to drill clean holes from 1/4-inch to 1-3/8-inch in sheet metal, plastic, and wood. Unlike standard straight-flute bits, this tool utilizes a dual spiral flute design that clears chips rapidly and helps reduce heat buildup. The 118-degree split point tip is engineered to help prevent walking on slick metal surfaces, facilitating precise, immediate starts. Forged from high-speed steel with a protective titanium coating, this durable bit is built to withstand high-friction drilling. The universal 3/8-inch hex shank helps eliminate slippage in standard drill chucks and quick-change impact drivers, making it a highly reliable solution for electrical, plumbing, and general HVAC maintenance.

• Covers 10 hole sizes from 1/4 in. to 1-3/8 in.
• Titanium-coated HSS 4241 steel supports extended tool life
• 118° split-point tip helps reduce walking at startup