Lumley 1" Round (ball) Bolt Knob
Genuine 3K Carbon Fiber
A super-strong and ultra-light weight round knob for any rifle or shotgun with a bolt or charging handle threaded for the common 5/16" x 24 TPI manufactured from genuine 3K carbon fiber composite. This is the same high-grade composite material used in expensive automotive parts, aerospace components and racing bikes - it is never hot and slippery, or cold and sticky like metal knobs can be in weather extremes. If you are building a light-weight mountain rifle, or need to shave a precious few ounces off that competition benchrest rig, or like us, you simply want to use the best gear available.... then this is the ultimate bolt knob.
Material: genuine 3K carbon fiber
Finish: non-glare matte (can be polished to gloss with basket weave pattern prominent)
Weight: 0.46oz (13 grams).
Thread: 5/16" x 24 TPI (5/16 UNF) - fits most American bolt handles with a threaded end.
Thread Material: 6061-T6 alloy
Thread length: 0.55" (14mm)
Operating Temperature: -58 °F (-50 °C) to +185 °F (+85 °C)
Maintenance: cosmetic scratches to the knob can be polished out. Gouges can be filled.
Environmental: chemically stable, UV stable, solvent resistant.