AT ProBits® Multi-Step Drills

AT ProBits multi-step drills—often called step drill bits—are designed to drill and enlarge holes in thin materials using a single tool (application dependent). Step drills are commonly chosen for sheet metal, fabrication, and electrical work because they can create multiple hole diameters, help produce cleaner holes, and reduce the need to switch between multiple drill sizes. Many users also rely on step drills for controlled hole enlargement and light deburring after drilling.

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Alfa Tools MB52506TNC FHSS PROBIT CONE DRILL TN COATED CARDED

SKU: AT-MB52506TNC
MPN: MB52506TNC

~~List price $117.96~~

Save $58.83

Alfa Tools MB52507 G HSS PROBIT CONE DRILL

SKU: AT-MB52507
MPN: MB52507

~~List price $181.44~~

Save $90.49

Alfa Tools MB52507TN G HSS PROBIT CONE DRILL TIN COATED

SKU: AT-MB52507TN
MPN: MB52507TN

~~List price $208.67~~

Save $104.08

Alfa Tools MB52508 H HSS PROBIT CONE DRILL

SKU: AT-MB52508
MPN: MB52508

~~List price $57.52~~

Save $28.69

Alfa Tools MB52508C H HSS PROBIT CONE DRILL CARDED

SKU: AT-MB52508C
MPN: MB52508C

~~List price $62.33~~

Save $31.08

Alfa Tools MB52508TN H HSS PROBIT CONE DRILL TIN COATED

SKU: AT-MB52508TN
MPN: MB52508TN

~~List price $66.11~~

Save $32.97

Alfa Tools MB52508TNC HHSS PROBIT CONE DRILL TN COATED CARDED

SKU: AT-MB52508TNC
MPN: MB52508TNC

~~List price $70.93~~

Save $35.37

Alfa Tools MB52511 K PROBIT CONE DRILL 3/16-7/8

SKU: AT-MB52511
MPN: MB52511

~~List price $94.00~~

Save $46.88

Alfa Tools MB52511C K HSS PROBIT CONE DRILL CARDED

SKU: AT-MB52511C
MPN: MB52511C

~~List price $98.81~~

Save $49.28

Alfa Tools MB52511TN K PROBIT CONE DRILL TIN COATED

SKU: AT-MB52511TN
MPN: MB52511TN

~~List price $108.11~~

Save $53.92

Alfa Tools MB52511TNC KHSS PROBIT CONE DRILL TN COATED CARDED

SKU: AT-MB52511TNC
MPN: MB52511TNC

~~List price $112.93~~

Save $56.32

Alfa Tools MB52513 M PROBIT CONE DRILL 1/4-1 1/8

SKU: AT-MB52513
MPN: MB52513

~~List price $131.11~~

Save $65.39

Alfa Tools MB52513TN M PROBIT CONE DRILL TIN COATED

SKU: AT-MB52513TN
MPN: MB52513TN

~~List price $150.78~~

Save $75.20

Alfa Tools MBML12 3/16-7/8 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML12
MPN: MBML12

~~List price $81.59~~

Save $40.69

Alfa Tools MBML12C 3/16-7/8 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML12C
MPN: MBML12C

~~List price $86.04~~

Save $42.91

Alfa Tools MBML12TN 3/16-7/8 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML12TN
MPN: MBML12TN

~~List price $100.04~~

Save $49.89

Alfa Tools MBML12TNC 3/16-7/8 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML12TNC
MPN: MBML12TNC

~~List price $104.48~~

Save $52.11

Alfa Tools MBML13 1/8-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, AH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML13
MPN: MBML13

~~List price $52.56~~

Save $26.21

Alfa Tools MBML13C 1/8-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, AH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML13C
MPN: MBML13C

~~List price $57.00~~

Save $28.43

Alfa Tools MBML13TN 1/8-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, AH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML13TN
MPN: MBML13TN

~~List price $59.30~~

Save $29.57

Alfa Tools MBML13TNC 1/8-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, AH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML13TNC
MPN: MBML13TNC

~~List price $63.74~~

Save $31.79

Alfa Tools MBML3TNW 3PC . HEX SHANK TN PROBIT CARDED

SKU: AT-MBML3TNW
MPN: MBML3TNW

~~List price $209.93~~

Save $104.70

Alfa Tools MBML3W 3PC . HEX SHANK PROBIT CARDED

SKU: AT-MBML3W
MPN: MBML3W

~~List price $172.48~~

Save $86.02

Alfa Tools MBML6 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML6
MPN: MBML6

~~List price $44.30~~

Save $22.09