step drill size/size: 4 HSS-TiN
ø1: 6.0mm, ø2: 26.75mm, 8 steps 90°: 6 - 9 - 11.4 (PG7) - 14 (PG9) - 17.25 (PG11) - 19 (PG13.5) - 21.25 (PG16) - 26.75 (PG21), ø3: 10.0mm, L1: 75mm, The CBN ground and spiral flutes: quiet running and high cutting performance, optimized chip flow protects the cutting edges and reduces built-up edges and cold weld marks: even long non-breaking chips will be removed easily, cone makes it easier to withdraw the tool from the material. TiN-coating: wear resistant titanium nitride coating: increased hardness, very low friction coefficient, optimal service life, split point, cooling is not necessary, but recommended
HSS-TiN
size/size: 4
HSS-TiN
size/size: 4
Ruko
ruko is a german company that specializes in the production of high-quality cutting tools, including drills. Their product range includes various drills, such as step drills, taper drills and countersink drills, designed for both professionals and hobbyists.
Ruko products are characterized by durability and precision, making them suitable for various applications in metal and woodworking.
Delivery method
Fedex Priority
Very fast To home & office
Very fast To home & office
$18.90
Delivery date 2026-10-21
Postal office
To the nearest Postal office (Shipping discount for order starting from 600€ or 700$)
To the nearest Postal office (Shipping discount for order starting from 600€ or 700$)
$20.60
Delivery date 2026-11-04
Courier International (Premium)
To Home or Office (Shipping discount for order starting from 600€ or 700$)
To Home or Office (Shipping discount for order starting from 600€ or 700$)
$40.50
Delivery date 2026-10-28
Fedex Economy
Fast delivery to home or office!
Fast delivery to home or office!
$14.50
Delivery date 2026-10-23
DHL Express
Fast Delivery To Home or Office (Shipping discount for order starting from 600€ or 700$)
Fast Delivery To Home or Office (Shipping discount for order starting from 600€ or 700$)
$27.30
Delivery date 2026-10-16
$5.90
Arrives in 3-4work days
Which hand tool steel is the most durable?
As we all know, different steels are used to make different hand tools. The properties and strength of the steels are given below.
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