Ring Spanner Open-Split 11 mm x 13 mm JCB JCB-7511113

Split ring spanner JCB 11 mm x 13 mm is a compact, metal hand tool designed for tightening and loosening hex fasteners in situations where a conventional closed ring cannot be positioned over the bolt head or nut. The open-split head allows engagement around partially obstructed fasteners while the opposite closed ring provides full contact for efficient torque transfer. The tool is suitable for workshop and field service work on machinery, automotive and industrial equipment where accessibility is limited.

Advantages

The combination of an open-split end and a closed ring end offers versatility: the open-split end enables use on installed fasteners without the need to remove surrounding parts, while the closed ring end ensures firm grip and reduced risk of rounding. Durable metal construction provides reliable torque transmission and resistance to wear under typical maintenance loads. Its compact size makes it easy to carry in a toolbox or on-site kit and simplifies work in confined spaces.

Suitable for

• Tightening and loosening hex bolts and nuts in confined or partially obstructed locations
• Routine maintenance on agricultural, construction and industrial machinery
• Automotive repair tasks where access to fasteners is limited
• Field service and mobile repair kits requiring compact, multi-use tools

Key specifications

• Sizes: 11 mm and 13 mm
• Open-split (crowfoot-style) on one end and closed ring on the other
• Material: metal alloy suitable for hand-tool use
• Finish: corrosion-resistant surface treatment for workshop conditions
• Length: compact profile for access in tight spaces

How to use

Select the end that matches the fastener size (11 mm or 13 mm). Position the open-split end around a partially obstructed nut or bolt where a closed ring cannot be slid over the fastener, and apply steady force to turn clockwise to tighten or counterclockwise to loosen. For maximum grip and reduced wear, use the closed ring end when there is sufficient access, ensuring the ring fully seats around the fastener before applying torque. Avoid excessive impact or use with power tools unless the tool is specifically rated for such use.

Usage recommendations

Inspect the spanner before use for signs of wear or deformation. Use appropriate personal protective equipment and match the correct size to the fastener to reduce risk of slippage. Store in a dry toolbox to maintain the corrosion-resistant finish and prolong service life.