1 in. Steel Ball Bearing - AndyMark, Inc

1601 Series Flanged Ball Bearing (1/2 ID x 1 1/8 OD, 5/16 Thickness) - 2 Pack - ServoCity

Steel Weight - AndyMark, Inc

Standard Diameter: 1 / 1.00 Inches Metric Diameter: 25.4mm Grade: 25 Material: AISI 52100 Chromium Steel Ball Weight (each): 2.3617 Ounces / 66.953

1 Inch Chrome Steel Ball Bearings G25

MRC 308M Single Row Radial Deep Groove Ball Bearing, Medium, ABEC 1, Open, 40 mm ID, 90 mm OD, 23 mm Width, 7500 Maximum RPM: Deep Groove Ball Bearings: : Industrial & Scientific

Compact Elevator Bearing Kits - AndyMark, Inc

VersaPlanetary Gearbox - VEX Robotics

1 Inch 440 Stainless Steel Ball Bearings G25-1 Bearings: : Industrial & Scientific

8 mm ID 22 mm OD Shielded Flanged Bearing (F608ZZ) - AndyMark, Inc

AndyMark 39 Tooth HTD Plastic Pulley Kit - RobotShop

MLToys Performance Ride-On Parts

HiGrip Wheels - AndyMark, Inc

This is a 1/4 in. round bore bearing that is unflanged. The Shielded Ball Bearing is a great way to make things spin fast!

1/4 in. ID 5/8 in. OD Shielded Bearing (R4ZZ)

1601 Series Flanged Ball Bearing (1/2 ID x 1 1/8 OD, 5/16 Thickness) - 2 Pack - ServoCity