About Chicago Brand

Speciality hand tools designed to save you time and effort, guaranteed to last.

Chicago Brand UK speciality hand tools are designed to save you time and effort. We pride ourselves on supplying high quality innovative tools that will make your toughest jobs easier. All our tools come with a lifetime guarantee and can be purchased from our quality distributors on the where to buy page.

We pride ourselves on quality, both in our products and service. Our knowledgeable team are happy to answer any questions you may have about our products and will direct you to the best suited item in our range to help complete your task.

You are reading about the very best spanners on the market. With Chicago Brand open end ratchet spanners You never have to buy another spanner ever again! (as long as you don’t misuse or abuse them.) Chicago Brand spanners will save you both time and effort, especially when working in confined spaces, they are built for professional use in the most demanding industries and come with a lifetime guarantee meaning you can use with absolute confidence. We are the only company offering both metric and imperial open end ratchet spanners so whether you’re working on a classic car or a fighter jet we have the set to suit you.

Unlike other spanners that are made from chrome vanadium Chicago Brand open end ratchet spanners are made of resilient 17-4PH stainless steel, meaning they are extremely durable. Designed for and used in the aerospace, automotive, electrical, plumbing, engineering, marine, DIY, and many, many other industries. Since our spanners contain no chrome or cadmium plating, they resist chipping that can interfere with sensitive mechanical and electrical functions and they won’t rust. Check out our tips and tricks in the News section for ideas on how Chicago Brand open end ratchet spanners can help you. Ultimate spanner for engine bay access

Open end ratchet spanners key features:

  • Open end ratchet
  • Swing angle of only 30 degrees
  • Small head size designed to access tight work spots
  • Unique interactive grip increases with force
  • Fast ratcheting action
  • constructed of 17-4PH stainless steel
  • Does NOT damage the head of nuts or bolts
  • Contains no chromium plating, resists chipping
  • Lifetime guarantee

Rounded bolt removal key features:

  • Easily removes rounded & rusty nuts and bolts
  • Made of high strength alloy steel
  • Exceed all ANSI strength requirements
  • Made in the USA
  • Lifetime guarantee

Torque ranges for spanners

As you can see from the figures below, you can put a HUGE amount of torque through both ends of Chicago Brand open end ratchet spanners.

10-12mm          275 inch lbs

13-14mm          550 inch lbs

15-19mm          413 inch lbs

3/8″-7/16″        275 inch lbs

1/2″-9/16″        550 inch lbs

5/8″-13/16″      413 inch lbs