PC-7 is a versatile larger fin. It is suited for most medium to heavy surfers and larger or looser board designs. If you are currently surfing medium sized fins (PC-5 etc) and feel you are lacking drive and hold PC-7's may allow you to get more performance from your board. Base: 4.52" 115mm Depth: 4.67" 119mm Area: 15.71"2 10137mm2 Sweep: 33 degrees Construction: Performance Core