Steel V-wheel roller bearing, Size 1 with 20 mm outer diameter. Precision-ground dual-row angular contact design with hardened raceway for low-friction V-guide linear motion on 90-degree rails or round shafts; approx. weight 0.11 lbs.
COMPONENT
NIL03SS420 stainless linear shaft, 3/16 in diameter, 12 in long, 420 SS, RC 50+ hardness.