Manufacturer Edmunds Manufacturer part number HC-KNOBS GTIN 715627420338 Availability Frank A. Edmunds Handi Clamp Wooden Ball Knobs-4/Pkg 4/PKG -WOODEN BALL KNOBS Old price: $11.79 Price: $8.99 Qty: Add to cart Add to compare list Add to Wishes-N-Wants View Edmunds-Handi Clamp Wooden Ball Knobs. The Handi Clamp needlework scroll frame line features a PVC clamp system to hold fabric tightly in place. This 3x6 inch package contains four wooden ball knobs and four washers. Made in USA.