CURT TruTrack Trunnion Bar Weight Distribution System (8K 10K lbs., 35 9 16" Bars) Shefton Hickory Flooring Sub Brand Drill America CA Residents: Sub Brand Drill America CA Residents: Prop 65 Warning(s) Yes For Use on Glass No For Use on Wood Yes Warranty None For Use on Ceramic No Total Number of Pieces 5 For Use on Concrete No For Use on Grout No Material Tungsten carbide Set Individual Individual For Use on Metal Yes Diameter Measurement 1 4 in For Use on Drywall No Type Bur For Use on Plastic Yes Application Cutting 31 Blade Diameter 4 1 2 Maximum Cut Depth @ 90 Deg Adjustable brackets provide fixed support unlike spring bar chain models While many weight distribution hitches are made to be compatible with a sway control attachment