Omtec Insert Roller plastic
end caps are gray color (not shown)

For applications where static electricity is a concern the plastic end caps are the ESD black color shown.
0.75 inch (19.05 mm) diameter galvanized steel roller
with steel ball bearings.
Bearing capacity:
Insert rollers: 30 lbs (13.6 kg)
See Below...
Use for items with softer bottoms and/or straight paths.
.
Minimum over all length of 2.625 inches (6.7cm)
Maximum over all length 20 inches (50.8 cm).
Over 20 inches use combination of shorter rollers.