Chiloskit Stainless Steel Deep U Groove Ball Bearings Pulley Metal Pulley Wheel Bearings Wheel Wire Rope Pulley for Lifting Guide, 8mm/0.3" Inner Dia Capacity 400kg/800 lbs (50mm/2inch)

Chiloskit Stainless Steel Deep Groove Ball Bearings Pulley Metal Pulley Wheel Bearings Wheel Wire Rope Pulley for Lifting Guide, 8mm/0.3" Inner Dia Capacity 400kg/800 lbs (50mm/2inch)

Heyous U Groove Stainless Steel Silent Pulley - 600LB, Silver Tone

Groove Wheel Pulley Stainless Steel Pulley Block Super Silent Single Pulley Block for DIY Gym Equipment,Sliding Gate Detachable Duplex Bearing with Mounting Screws and Expansion Pipes U Type (1 Pack)