Material: High-speed Steel (HSS 4241). Shape of Shank : Triangular. Type: Drill Bit. 1 x Step Drill Bit 4-12mm. 1 x Step Drill Bit 4-20mm. 1 x Step Drill Bit 4-32mm. US - Wire Connectors. UK - Wire Connectors.
eBay
Material: HSS. Superior quality HSS which makes your work more efficient and will reduce your man efforts. Its surface has been polished by the titanium processing so that will reduce friction and run cooler.
eBay
15 Step HSS Cobalt Step Drills Nitrogen Spiral For Metal Cone Drill Bit 4-32MM.
eBay
HSS Spiral Step Cone Drill Bit Metal Hole Cutter Titanium Nitride Coated 4-32MM.
eBay
6 Pcs Drill Bit Set: Including 3 pcs step drill bits (one 5-Step Drill Bit from 4mm to 12mm, one 9-Step Drill Bit from 4mm to 20mm and one 15-Step Drill Bit from 4mm to 32mm), 3 pcs twist drill bits (3mm, 6mm, 8mm).
eBay
The bluespot 4-22mm step drill. Specially designed for precision drilling of holes in aluminium, brass, copper, plastic, steel and wood. Manufactured from high steel for increased durability and cutting power. Titanium coated to reduce friction and heat. 2mm step increments.
eBay
1/2" reduced shank allows cutting of larger holes using a standard 1/2" or 13mm, 3-jaw chuck. Type: Drill Bit. Durable, mainly used for bore machining. Steam tempered blue finish. Standard helix +118-degree point.
eBay
3pcs HSS Steel Step Cone Drill Hole Cutter Titanium Bit Set 4-12/20/32mm. Our step drill bits are then coated with titanium for superior durability. 4 ~ 32mm (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm), 6.35 mm shank.
eBay