Koncocoo

Best Male Ball Knobs

uxcell 5 Pcs M6 x 25mm Male Thread Metal Clamping Star Knobs Grips Black
Screw on type design for easy install and with surface nice finish for comfortable grip.
Reviews
"I needed a metric bolt with some kind of handle to replace one on my Ryobi miter saw."
"Were I to do it again, I would probably buy the shorter shaft length version for this application, now that I know how it fits for both the boom and base clamping screws."
"Superb quality."
Find Best Price at Amazon
20 Pcs M6 x 20mm Male Thread 25mm Star Head Screw On Clamping Knob
Widely used for mechanical equipment, instrument and apparatus industry equipment.
Find Best Price at Amazon
Uxcell a15033100ux0264 M6 x 16 mm Male Thread Star Shaped Head Clamping Screw Knob, Metal/Plastic 5 Pieces
Widely used for mechanical equipment, instrument and apparatus, food and pharmaceutical industry equipment.
Find Best Price at Amazon

Best Female Ball Knobs

Davies Thermoset Ball Knob, Smooth Rim, Threaded Hole, 3/8"-16 Thread Size X 1/2" Thread Length, 1-3/8" Diameter (Pack of 5)
Mounting diameter and threads per inch: 3/8-16.
Reviews
"worked well for my project."
Find Best Price at Amazon