New in box Grizzly 3 3/4 4 Jaw Wood Lathe Chuck set T10809.  Shows no signs of use.  Instructions are for T10811 5 1/2" wood lathe chuck set.  Don't know if they were put there by mistake or they also apply to the 809. 

Note: Requires T10806 adaptor to use with 3/4” spindle and T10807 adaptor to use with a 1 1/4” Spindle.