LL2, LL6 - The Farmi keyhole sliders are used with the Farmi skidding chains. The JL60T, JL601, and JL2/601 have LL6 keyhole sliders. All other models have LL2 keyhole sliders.
The LL2 size is used for cable up to 1/2" and skidding chains up to 5/16". The LL6 size is used for cable up to 3/4" and skidding chains from 5/16" to 7/16".
Winch Accessories 
