Westside BT Medium Harp Putter (Stock Stamp) [Back Stock Inventory - Disc and Stamp Color WILL VARY]See All: BT Medium Harps with Stock stamp. Mold: The Westside Harp Putter in BT Medium Plastic Speed: 4 Glide: 3 Turn: 0 Fade: 3 See all Harps The Harp is our most reliable approach disc. Designed to withstand any type of condition. It will hold in the wind. For professional players, this could be their only approach disc they will need to carry as it can hold anyone's arm speed and still hyzer. For slower arm speeds, it will be your most overstable