17X19mm Double Ring Spanner

• Acc. to DIN 838, ISO 3318, ISO 1085, ISO 10104
• Rings deep offset, strong but thin walls
• Vanadium steel 31CrV3, chrome-plated
• Satin non-glare finish
• Carefully forged and professionally machined:
• Ring: thin-walled, 5° deep offset from shaft, with UD profile for gentle transmission of force
• High bending strength - does not fracture or splinter when overloaded, thus minimising the risk of injury
• Overloading indicated by deformation
• For extremely deep or inset bolts
• Top-grade industrial quality for the hardest of continuous use