3,500 lbs. DeeMaxx Slip Over Maxx Finish disc brake kit. Hubs are not included. 5 lug 1/2" studs. 10.9" Slip Over Vented rotor. Unique rotor cross section design actively draws cooling air from the rotor interior! Exclusive 120º bleeder design means better bleeding, balanced system, and no more damaged bleeders! Exclusive laser writing on caliper means instructions are always there! Every caliper is tested to 2000 psi Robust ductile iron casting eliminates flexing resulting in more brake torque. Exclusive bolt design means no more mishandling or incorrect shipping of bolts. Compatible with every surge and electric over hydraulic actuators! Ceramic brake pads are slotted, chamfered, & feature a stainless steel clip Unique bracket design provides twice as many mounting options for caliper position Produced in ISO Quality certified factories! Passed the SAE J2681 Brake test! Built for Dexter, Lippert, Al-Ko, and Rockwell Trailer Axles. Will not work on marine based trailer axles such as UFP or Tiedown.