Specifications: Model: LB-60 Diameter: 60 mm / 2.36 in Height: 50 mm / 1.97in Level adjustment: ±15° Mounting stud：UNC3/8" Mounting hole：UNC3/8" Max load：15 kg / 33.07 lb Weight：206g / 0.06lb Features: A leveling base on your tripod is the perfect foundation for gimbal heads, fluid heads and even ballheads. Each leveling base offers +/-15° of leveling capability and locks solidly with just a twist. Choose a leveling base with a flat platform for direct mounting of a tripod head. CNC machined 6061-T6 Aluminum ANTI-TWIST SAFETY SCREWS DESIGN Included 3 set-screws on the spider to secure the ballhead mounted on the tripod(turn the set-screws upwards with the included allen wrech to secure the ballhead on top). BETTER LOCK-UP Screw the leveling base onto the platform of your tripod, or any mounting platform onto which you want to mount a leveling base to. Twist the handle to lock & unlock the base. The fluid motion allows smooth and fast leveling, no matter the load. Additionally, this locking ring gives the user greater leverage for better lock-up. UNC3/ 8"-16 MOUNTING STUD This Leveling Base is designed to be compatible with all tripods. It has a 3/ 8"-16 socket on the bottom, allowing it to be screwed on to any mounting platform with a stud of the same size and thread call-out (3/8"-16). RESERVED HOLE FOR ALLEN KEY Use included allen key to strengthen the locking when the heay-liting needed.