The stair balusters are the pieces that you will hold
onto while going up and down the stairs if they are connected to the
balusters. Some of the stair banisters are large and you will not be
able to hold on to them as easily as the smaller ones. In other words
the smaller ones are gripable where the larger ones are hard to wrap our
The stair banister is another decorative part of the hand rail. There are large and small banisters, banisters are made from different types of materials, like steel or wood. Wood is the most common used in home building.
The building codes have changed in the last decade and the home stairway now requires a guard rail, which is at least 42 inches in height, measuring from the stair nosing to the top of the banister.
The stairway hand rail system also requires a gripable handrail which should be measured from the stair nosing to the top of the gripable handrailing. This measurement can be between 34 inches and 38 inches and you should verify this measurement by contacting your local building department.
Stair banisters should be made from smooth material and formed properly to prevent snags or injury to the people running their hands along the banister while walking up and down the stairs.
The end of a stair banister can become a safety hazard if not constructed properly. These banisters should not protrude or stick out, where it could catch someone's clothing or purse.
This seems to be a problem that few stair builders know about.