Warning.. Do not buy Bob's Max2 limbs if you do not want a fast, quiet limb that's slings arrows with authority. Mine came in today and I'm pulling right at 55# and slinging Axis 340s with 75 grain insert and 300 grain tips. Total arrow about 670 grains. These limbs are as smooth as Marvin Gay. Feel like my 50# Black Max limbs. I have the shorts on a 15" riser making a 56" bow.