Shaker knobs come in four types of wood: walnut, maple, cherry, or oak. They all have 3/8'' diameter tenon.Priced per pair. -- (Category: Knobs, Pulls and Handles)
Shaker Knobs
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Shaker Knobs.
This Shaker Knobs product is carried by a family-run company widely known as "the superstore of woodworking." They have what you're looking for.
Product:
Main category: Knobs, Pulls and Handles
Name: Shaker Knobs