Machined from: Domestic 6061 T6 Extruded Aluminum. Finish: Matte Black. Mounting Hardware: Hex head screws and wrench provided. Center Spread: 1.884". Overall Length: 5.094". This mount was designed for use with a Williams Peep sight. This mount is milled on both sides for bolt clearance on left or right handed models. This one piece mount was specifically developed for the Savage Rascal. Picatinny cross slots run the full length of the rail, which gives the shooter flexibility when mounting scope rings and other accessories. The channel in the center reduces the overall mass of the mount, weighing in at 2-3oz on average. EGW's one piece scope mounts are the obvious choice for hunters and tactical shooters alike. This mount is a Picatinny-style base and compatible with Picatinny or Weaver scope rings. Installation: EGW recommends 20 inch lbs of torque and a drip of blue thread locker (sold separately).