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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.

Alfa Tools MBML6C 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

Alfa Tools MBML6C 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML6C
MPN: MBML6C

Save $22.97
Alfa Tools MBML6TN 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

Alfa Tools MBML6TN 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML6TN
MPN: MBML6TN

Save $25.31
Alfa Tools MBML6TNC 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

Alfa Tools MBML6TNC 3/16-1/2 PROBIT - MONOLOCK, 1/4" HEX SHANK, BH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML6TNC
MPN: MBML6TNC

Save $27.62
Alfa Tools MBML9 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

Alfa Tools MBML9 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML9
MPN: MBML9

Save $32.89
Alfa Tools MBML9C 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

Alfa Tools MBML9C 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML9C
MPN: MBML9C

Save $35.20
Alfa Tools MBML9TN 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

Alfa Tools MBML9TN 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, TUBED

SKU: AT-MBML9TN
MPN: MBML9TN

Save $41.52
Alfa Tools MBML9TNC 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

Alfa Tools MBML9TNC 1/4--3/4 PROBIT - MONOLOCK, 1/4" HEX SHANK, CH, HSS TiN COAT, 2 FLUTES, MULTI-STEP, BRIGHT, 1/CARD

SKU: AT-MBML9TNC
MPN: MBML9TNC

Save $43.83
Alfa Tools MBMLCO13 A 1/4 HEX SHANK COBALT PROBIT CN DRILL

Alfa Tools MBMLCO13 A 1/4 HEX SHANK COBALT PROBIT CN DRILL

SKU: AT-MBMLCO13
MPN: MBMLCO13

Save $26.93
Alfa Tools MBMLCO13C A 1/4 HEX SHANK COBALT PROBIT CN DRILL CARDED

Alfa Tools MBMLCO13C A 1/4 HEX SHANK COBALT PROBIT CN DRILL CARDED

SKU: AT-MBMLCO13C
MPN: MBMLCO13C

Save $29.24
Alfa Tools MBMLCO3W 3 PC . HEX SHANK COBALT PROBIT CARDED

Alfa Tools MBMLCO3W 3 PC . HEX SHANK COBALT PROBIT CARDED

SKU: AT-MBMLCO3W
MPN: MBMLCO3W

Save $88.21
Alfa Tools MBMLCO6 B 1/4 HEX SHANK COBALT PROBIT CN DRILL

Alfa Tools MBMLCO6 B 1/4 HEX SHANK COBALT PROBIT CN DRILL

SKU: AT-MBMLCO6
MPN: MBMLCO6

Save $22.72
Alfa Tools MBMLCO6C B 1/4 HEX SHANK COBALT PROBIT CN DRILL CARDED

Alfa Tools MBMLCO6C B 1/4 HEX SHANK COBALT PROBIT CN DRILL CARDED

SKU: AT-MBMLCO6C
MPN: MBMLCO6C

Save $25.03
Alfa Tools MBMLCO9 C 1/4 HEX SHANK COBALT PROBIT CN DRILL

Alfa Tools MBMLCO9 C 1/4 HEX SHANK COBALT PROBIT CN DRILL

SKU: AT-MBMLCO9
MPN: MBMLCO9

Save $35.23
Alfa Tools MBMLCO9C C 1/4 HEX SHANK COBALT PROBIT CN DRILL CARDED

Alfa Tools MBMLCO9C C 1/4 HEX SHANK COBALT PROBIT CN DRILL CARDED

SKU: AT-MBMLCO9C
MPN: MBMLCO9C

Save $37.54
Alfa Tools Drilling & Metal Cutting Tools mbs13

Alfa Tools MBS13 3PC MULTI STEP PROBIT DRILL SET PLASTIC CASE

SKU: AT-MBS13
MPN: MBS13

Save $100
Alfa Tools Drilling & Metal Cutting Tools mbs13tn

Alfa Tools MBS13TN 3PC PROBIT DRILL TIN CARBIDE TIPPED SET PLASTIC CASE

SKU: AT-MBS13TN
MPN: MBS13TN

Save $120.46
Alfa Tools Drilling & Metal Cutting Tools mbs14

Alfa Tools MBS14 4PC MULTI STEP PROBIT DRILL SET PLASTIC CASE

SKU: AT-MBS14
MPN: MBS14

Save $171.56
Alfa Tools Drilling & Metal Cutting Tools mbs14tn

Alfa Tools MBS14TN 4PC PROBIT DRILL TIN CARBIDE TIPPED SET PLASTIC CASE

SKU: AT-MBS14TN
MPN: MBS14TN

Save $217.44
Alfa Tools Drilling & Metal Cutting Tools mbs15

Alfa Tools MBS15 3PC MULTI STEP PROBIT DRILL SET PLASTIC CASE

SKU: AT-MBS15
MPN: MBS15

Save $119.72
Alfa Tools Drilling & Metal Cutting Tools mbs15tn

Alfa Tools MBS15TN 3PC PROBIT DRILL TIN CARBIDE TIPPED SET PLASTIC CASE

SKU: AT-MBS15TN
MPN: MBS15TN

Save $150.59
Alfa Tools Drilling & Metal Cutting Tools mbs16

Alfa Tools MBS16 6PC .MULTI STEP PROBIT DRILL SET PLASTIC CASE

SKU: AT-MBS16
MPN: MBS16

Save $266.80
Alfa Tools Drilling & Metal Cutting Tools mbs16tn

Alfa Tools MBS16TN 6PC PROBIT DRILL TIN CARBIDE TIPPED SET PLASTIC CASE

SKU: AT-MBS16TN
MPN: MBS16TN

Save $321.62
Alfa Tools Drilling & Metal Cutting Tools mbs17

Alfa Tools MBS17 4PC MULTI STEP PROBIT DRILL SET PLASTIC CASE

SKU: AT-MBS17
MPN: MBS17

Save $184.28
Alfa Tools Drilling & Metal Cutting Tools mbs17tn

Alfa Tools MBS17TN 4PC PROBIT DRILL TIN CARBIDE TIPPED SET PLASTIC CASE

SKU: AT-MBS17TN
MPN: MBS17TN

Save $207.44