CBM Scaffold Hoist Pulley & 12" Aluminum Pulley Wheel Set with Flip - Lock Hoist Bracket and Arm Lifting or Lowering Scaffolding CBM Scaffold 12" Aluminum Hoist Pulley & Pulley Wheel Set with Hoist Bracket & Arm Lifting Lowering Heavy duty forged swivel hook with safety clip, Hoist Pulley wheel with safety latch lock Wheel Dual sealed ball bearings with safety latch lock Arm Bracket and wheel Arm can install on Scaffold frame we carry Filp Lock Drop Lock and Snap on arms to fit your Frames IF YOU HAVE ANY QUESTIONS PLEASE CLICK ON (CBM SCAFFOLD)