2- DMM Ultra O carabiners

Which weight combination should I choose

Primary Wheel Chock - Width 16 in

these combined with the battery-powered winch PCW3000-Li

Dielectric Silicone Lubricant & Sealant dynaglide 2- DMM Ultra O carabinersOne Bottle PST 455 O Ring Grease is ideal for maintaining long term lubrication and sealing. This silicone based material helps to swell rubber O rings and seals, protecting against drying, cracking, and brittleness in extreme conditions. PST 455 can be used over a wide temperature range and is heat stable and oxidation resistant for reliable performance. Performance Features Compatible with many plastics and elastomers High oxidation resistance Wide