Sintered Iron or Nylon Insert

comes with preinstalled precision, sealed ball bearing

Plain Bore Insert

Moldong Rubber on Aluminum
Soft Rubber
Hard Rubber
Pneumatic
PolyPro
Prothane
Polyurethane on Polypropylene
Polyurethane on Aluminum
Polyurethane on Cast Iron
Phenolic
Stainless Steel
Steel
GrayPro
ThermaPro
Recycled