Bicycle ball bearings
Coventry Machinists Co. (a) double-row ball bearing, and cap clamp lock.
Coventry Machinists Co. cycle ball bearings, a. double-row ball bearing, cap clamp lock, b. hollow single-row racing ball bearing
Coventry Machinists Co. (a) double-row ball bearing, and cap clamp lock.
Coventry Machinists Co., Item (b), hollow single-row racing ball bearing.