Check the listing for details. Simpson 30011BK Black Head/Neck Restraint, Dual Harness. Color: Black, Condition: New. Listed at 111.95 USD. Simpson Dual Shoulder Harness system now offers and provides the driver the feel and confidence of the 3" shoulder harness straps between your shoulders and your head/neck device at the same time featuring the 2" strap over your device. You now can have the feel and use of the 3" shoulder harness holding you as tight as you need into your seat while simultaneously utilizing your head/neck device with the dual/secondary 2" harness belt over the top of your head/neck device. Compatible with HANS and other Head and Neck Restraint devices. Individual shoulder harness type. 3" wide harness under device. 2" wide harness over device. 48" length adjusts down to 24" Available in Black, Red, Platinum or Blue. Wrap around / bolt-in mount. Latch/Link style.