10231 15101 10232 10233 10234 10310 10311 10312 10220 10221 Price $38.37 $47.59 $101.96 $45.36 $65.50 $49.20 $96.76 $81.81 $97.01 $213.24 $69.34 $250.77 $37.37 $181.14 $247.47 AUTOSOURCE DRILL BITS, EXTRACTORS & ACCESSORIES 270 Part # Holes (Range) Increments Self Starting Drill Bits 1 (3/8") — 1 (1/2") — 1 (7/8") — 13 (1/8" to 1/2") 1/32" 13 (1/8" to 1/2") 1/32" 6 (3/16" to 1/2") 1/16" 12 (3/16" to 7/8") 1/16" 9 (1/4" to 3/4") 1/16" Hole Enlarging Drill Bits 8 (9/16" to 1") 1/16" 10 (13/16" to 1-3/8") 1/16" STEP DRILL BITS 3 Pc. Self Starting Step Drill Bit Set Contains: • Size #1: 1/8" to 1/2" • Size #2: 3/16" to 1/2" • Size #3: 1/4" to 3/4" 5 Pc. Step Drill Bit Set • Tri-flat shank design for sure grip in chuck without slippage Set Includes: • 1/4" Shank: 3/16" to 1/2" holes in 1/16" steps • 1/4" Shank: 1/8" to 1/2" holes in 1/32" steps • 3/8" Shank: 1/4" to 3/4" holes in 1/16" steps • 3/8" Shank: 3/16" to 7/8" holes in 1/16" steps • 3/8" Shank: 1/4" to 1-3/8" holes in 1/8" steps 3 Pc. Titanium Coated Self Starting Step Drill Bit Set Contains: • Size #1: 1/8" to 1/2" • Size #2: 3/16" to 1/2" • Size #3: 1/4" to 3/4" 3 Pc. HSS Step Drill Bit Set with Titanium Finish • 28 holes sizes • 1/8" to 3/4" KnKut 3 Pc. Hole Expansion Step Reamer Set • USA Made KnKut Step Reamers accurately starts on contact and enlarges and deburrs holes in material up the 1/2" thick. Gold Oxide treatment enhances lubricity, reduces friction and increases toughness. • Size Range: 3 Piece Set Includes 5/16" - 9/16", 9/16" - 13/16", 13/16" - 1-1/16" • 90° Notch Point starts holes easily • 5 hole enlargement steps • 3/8 Shank Diameter • 3-Flats on Shank VSG-10312 (#12) VSG-10310 (#10) VSG-10311 (#11) VSG-10231 (#1) VSG-15101 (#1 - TiN) VSG-10232 (#2) VSG-10234 (#4) VSG-10233 (#3) VSG-10220 (#20) VSG-10221 (#21) VSG-10502 ATD-9200 VSG-15502 TTN-16503 KNK-3KK4SR Can’t find what you’re looking for? Visit AutosourceToday.com AUTOSOURCE 2026
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