We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver Robertson #3 insert bit 1 inch 1/4 inch shank

Tuff Stuff

Tuff Stuff RS3100 1" Robertson Insert Bit Tip #3 1/4" Shank

SKU CH-YXJ8-AMCSX MPN RS3100

A 1-inch Robertson #3 insert bit with a 1/4-inch shank for general-purpose driving tasks

  • TypeDrill Bits
  • Selling UnitEach
  • Robertson #3 tip drives square-recess screws securely
  • 1" length reaches into tight fastener locations
  • Single-ended design focuses torque on one working end
  • 1/4" hex shank fits standard drill chucks and drivers
  • Tuff Stuff construction delivers lasting performance for everyday tasks

Robertson #3 insert bit

The Tuff Stuff RS3100 is a single-ended Robertson #3 insert bit with a 1/4" shank and 1" overall length. It fits any drill or driver that accepts a standard 1/4" hex shank. The bit is designed for general-purpose fastening tasks in home, shop or garage settings. Condition is new.

Users needing Robertson #3 drive

This bit suits anyone driving Robertson #3 screws with a 1/4" shank chuck. It is not for users who require a different drive profile such as Phillips, Torx or square sizes other than #3. Builders needing a double-ended bit or a longer reach should look at other options.

1/4" shank compatibility

The decisive specification is the 1/4" hex shank, which determines whether the bit fits your drill or driver. Verify that your tool accepts this shank size before purchase.

Highlights

  • Robertson #3 tip drives square-recess screws securely
  • 1" length reaches into tight fastener locations
  • Single-ended design focuses torque on one working end
  • 1/4" hex shank fits standard drill chucks and drivers
  • Tuff Stuff construction delivers lasting performance for everyday tasks

Specifications

BrandTuff Stuff
ModelRS3100
TypeDrill Bits
Selling UnitEach

Questions about this item

Does the Tuff Stuff RS3100 come as a single bit or do I need to buy a pack separately?

It is sold as each, so one Robertson #3 bit arrives in the box; no extra bits or holders are included.

The model is listed as RS3100 — does that number indicate a different size or just this 1-inch #3 bit?

RS3100 is the part number for this specific 1-inch single-ended Robertson #3 bit with a 1/4-inch shank.

Will the 1/4-inch shank on this bit fit my standard drill chuck and impact driver?

Yes, the 1/4-inch shank fits any drill, driver or impact tool that accepts a 1/4-inch hex insert bit.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.