Area 419 Bolt Knob Features The Area 419 Bolt Knob was designed to be the best all around bolt knob for competition and general use and its central feature is a finger groove that your finger automatically catches during bolt manipulation. This groove eliminates the need to search for the ideal hand position on every cycle speeding up follow up shots during rapid fire strings of a match. Two knurled surfaces flank the groove on either side adding a sure confident grip regardless of weather or glove use. Machined from 6061-T6 aluminum and anodized flat black the knob is built to withstand repeated use without wearing down. This knob is threaded 5/16 inch-24 to match the Remington 700 and Defiance bolt pattern and it measures 1.625 inches long specifically to accommodate shorter factory bolt handles. Made entirely in the USA the knob reflects Area 419 s focus on precision engineered reloading and rifle accessories built for serious shooters. Installation is a simple thread on replacement for the factory bolt handle knob requiring no gunsmithing. Competition shooters and hunters running a Remington 700 who want faster smoother bolt cycling will find this knob a worthwhile low cost upgrade. Area 419 Bolt Knob Specifications Manufacturer: Area 419 Model: Bolt Knob Compatible Hosts: Remington 700 Color: Black Anodized Material: Aluminum Finish: Matte Length: 1.63 Weight: 0.20 lbs Available At: GrabAGun