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Product Specifications:
| Item | Twist Drill Bit |
| Cutting Direction | Right Hand |
| Decimal Equivalent | 0.25 |
| Depthdia. Ratio | 12xd |
| Dimension Type | Fractional Inch |
| Drill Bit Dimension Type | Fractional Inch |
| Drill Bit Material | High Speed Steel |
| Drill Bit Point Angle | 135° |
| Drill Bit Point Type | Split Point |
| Drill Bit Size | 1/4" |
| Drilling Depth | 2 1/2" |
| Drilling Depth (in.) | 2-1/2" |
| Features | 135 Degrees |
| Finish | Tin Coat |
| Finish - Machining | Titanium |
| Flute Length | 3" |
| Flute Type | Spiral |
| Impact Rated | Yes |
| Impact Rating | Yes |
| Material | High Speed Steel |
| Material - Machining | High Speed Steel |
| Max. Drilling Depth | 3" |
| Overall Length | 4" |
| Point Angle | 135° |
| Primary Material Application | Hard Wood, Steel |
| Primary Material Application Iso Code | O |
| Promotion Restriction | Not Eligible For Promotion |
| Shank Dia. | 1/4" |
| Shank Hex Size | 1/4" |
| Shank Shape | Hex |
| Shank Type - Machining | Hex |
| Size | 1/4" |
| System Of Measurement | Fractional Inch |
Shipping Info:
| Ship weight (kg) | 0.22 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 10.16 |
| Ship width (cm) | 2.54 |
| Country of Origin | CN |
Product Variants
| Product | Model | Decimal Equivalent | Drill Bit Size | Drill Bit Point Angle | Flute Length | Primary Material Application | Max. Drilling Depth | Finish | Overall Length | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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TI2135IM | 0.125 | 1/8" | 135° | 1 1/2" | Hard Wood, Steel | 1 1/2" | Tin Coat | 2 3/4" | €6.43 | |
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BL2147IM | 0.3125 | 5/16" | 135° | 3" | Plastic, Steel, Wood | 3" | - | - | €12.46 | |
![]() |
BL2155IM | 0.4375 | 7/16" | 135° | 4" | Plastic, Steel, Wood | 4" | - | 5 1/4" | €26.74 | |
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BL2159IM | 0.5 | 1/2" | 135° | 5" | Plastic, Steel, Wood | 5" | - | - | €31.64 | |
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BL4143IM | 0.25 | 1/4" | 135° | 3" | Plastic, Steel, Wood | 3" | Black Oxide | 4" | €9.12 | |
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BL4155IM | 0.4375 | 7/16" | 135° | 4 1/2" | Plastic, Steel, Wood | - | Black Oxide | 5 1/4" | €22.28 | |
![]() |
TI4135IM | 0.125 | 1/8" | 135° | 1 3/4" | Hard Wood, Steel | 1 3/4" | Tin Coat | 2 3/4" | €5.08 |
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Contact us
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BOSCH TI4143IM 1/4 Inch Twist Drill Bit, High Speed Steel, 2-1/2 Inch Depth, Hex Shank Type
€9.97 /unit






