Master Mfg. Co Deluxe Duet Hooded Chair Mat Caster Set - Includes 5 wheels and 10 stems; 5 each: 7/16 Dia. x 7/8 Long and 3/8 Dia. x 7/8 Long, 110 lbs./Caster, Matte Black Finish
Deluxe Duet twin wheel casters complements all types of office and home-office furniture. 2" diameter dual wheels provide maximum mobility and smooth quiet rolling on light-duty to medium-duty applications. Use soft wheels on hard floors and chairmats. Weight rating is 100 lb. per caster. Casters include 7/16" x 7/8" B stems and 3/8" x 1" K stems.