These Facom 44 open-end wrenches/spanners come in metric sizes and are finished in satin chrome, which is both attractive and hard-wearing. The wrenches are double-ended with two different, fixed size heads. The wrench is flat, with heads slightly tilted away from the axis of the handle. This allows a greater range of movement, making them ideal for use in confined spaces. Performance conform to ISO 10102, DIN 3110, NF ISO 3318 and NF ISO 10102. The FCM441011 Open End Spanner has the following specifications Head sizes 10 x 11mm. Length 152mm. Weight 47g.