CL 50968A Dual Wheel Caster Assembly for Clarke Boost 28, 32 and Encore S2426, L2426 Floor Scrubbers. Heavy duty, dual wheel caster assembly with ball bearing base. Fits Clarke Boost 28, Boost 32, Encore L2426 and Encore S2426 models. May fit other models. Please check your model before ordering. Replaces Nilfisk Clarke 50968A. Our Part Number CL 50968A