Q: What materials can these bits drill?
This twist drill set is rated for all hardwoods and metals except hardened steel, making it a general-purpose choice for a home or shop drill press.
61J0101 - 13-Piece Imperial Set
Set:
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Ordinary twist drills are readily available. Really good ones are much harder to find. These are made of high-speed steel (will stay sharp much longer) and are extra-long, full jobber sized. Designed to be used in a drill press or an electric hand drill, they are superb for use in all hardwoods and metals, except hardened steel.
Each set comes racked in a metal case for easy selection. The 13-piece set is 1/16" to 1/4" by 64ths. The 15-piece set is 1/16" to 1/2" by 32nds. The 29-piece set is 1/16" to 1/2" by 64ths. Number sets are also available. Bits up to 3/8" are shanked to size; larger bits have 3/8" shanks.
This twist drill set is rated for all hardwoods and metals except hardened steel, making it a general-purpose choice for a home or shop drill press.
Yes, they work in either a drill press or an electric hand drill, though a drill press gives more control for the larger sizes.
The fractional sets step in 1/32" or 1/64" increments up to 1/2" and suit general dimensioning, while the number sets (#1 to #80) match precise tap-drill and clearance-hole charts; choose a number set if you're following a published drill-and-tap size chart.
No, the manufacturer doesn't recommend them for hardened steel; a cobalt or carbide bit is a better choice for that material.
| Materials | High-speed steel |
| Dimensions | 13-piece: 1/16" to 1/4" by 64ths; 15-piece: 1/16" to 1/2" by 32nds; 29-piece: 1/16" to 1/2" by 64ths; 60-piece: #60 to #1; 20-piece: #80 to #61 |
| Compatibility | Fits drill presses and hand drills with a 3/8" or smaller chuck |
| Includes | Twist drill bits; metal storage case |
| Package Quantity | Set of 13, 15, 20, 29 or 60 |
| Warranty | Lee Valley Satisfaction Guarantee |

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Triumph HSS Twist Drill Sets
Ordinary twist drills are readily available. Really good ones are much harder to find. These are made of high-speed steel (will stay sharp much longer) and are extra-long, full jobber sized. Designed to be used in a drill press or an electric hand drill, they are superb for use in all hardwoods and metals, except hardened steel.
Each set comes racked in a metal case for easy selection. The 13-piece set is 1/16" to 1/4" by 64ths. The 15-piece set is 1/16" to 1/2" by 32nds. The 29-piece set is 1/16" to 1/2" by 64ths. Number sets are also available. Bits up to 3/8" are shanked to size; larger bits have 3/8" shanks.
Choose an option to view item availability.
Choose an option to view item availability.
Choose an option to view item availability.