Features:

• SP Tools patented Gear Drive spanners are precisely machined with deeper gears for greater torque loading and reliability with 72 teeth that only require 5° of space per turn.
• SP box ring end spanners feature a deeper flat drive ring making them the perfect spanner for getting to and loosening those tricky, hard to reach, often worn fasteners by increasing the contact area with the nut or bolt head. More contact means greater applied torque.
• Chrome Vanadium Steel (Cr-V) for high strength & durability
• Meets & exceeds international ANSI & DIN standard