Werner PK70-1 Ladder Leveler with 2-Base Unit Attachments
The LeveLok Ladder Leveler with 2 base attachments.  Base unit stays attached to the ladder while leveler can be easily removed when not in use.  Swivel shoe with ice pick on both ends.  Leveler can be used on either side of the ladder.  Provides 8-1/2-inch of travel.  Fits on:  MT Series, D7100, D6200, 7100, D1300, D1500, 7800 series ladders.