will this work whit my little giant ladder

Hi Daryl, according to the manual in the resources and downloads section on the product page, yes it should!

Will these work on werner ladders

These will work for the majority of Werner ladders. However, please pay attention to the rating of your ladder. The LeveLok Ladder Levelers are rated to be used on ladders up to and including Type 1AA.

how are these levelers attached

The base unit attaches to ladder rail with 3 mounting bolts, washers and nuts. All necessary hardware is included.

How much will the levellers extend

This product is the base unit only. However, the LeveLok Ladder Levelers add an additional 10 inches to your ladder that can be raised in 3/16" increments.

Will they work on Gorilla ladders?

The LeveLok Ladder Levelers are rated to be used on ladders up to and including Type 1AA. They are approved for many types of ladders including, extension, articulating, straight, combination, sectional, and even step ladders.

Will these fit on a Little Giant ladder?

Yes they will

Insufficient information provided as to the ladder mfgr. whose product this will work on. How are they attached to the ladder and can each be varied in length?

Manufacturer: Levelok They can be used on any extension ladder. The guide rails are screwed into the outside of the side rails. The adjustable legs slide inside of the guide rails.

What are the approximate size holes that must be drilled into the ladder to mount these Ladder legs?

Drill intial 1/8" pilot hole, then 11/32 hole.