Triple X is the best Gripper you can buy! The triple row,  X pin format, provides flatter stronger and wider lateral hold for carpets which have thicker or stiffer backings. Use Triple X for Woven, Felt Backs and stiffer Tufted carpets in addition to installations using thicker underlays. Quality ply wood for less warp and fewer splinters. Available in 120 linear metre trade packs. Width = 28 cm | Gauge = 6mm | Nail Type = Wood Ring Shank Unit Sizes – Trade Packs TGX10/120=80 x 1.5m pieces = 120 lin m