• Combines the innovation of gear wrench to provide the best possible conbination. • Provides coverage for all major vehicles with serpentine belt configuration. • The versatility and strength if the gear wrench allows for unlimited access to serpentine pulley tensio arms with added attachments for unlimited coverage. • Socket size: 8, 12, 13, 14, 17, 18, & 24mm; 3/8", 1/2" & 5/8"