Bridles/Wishbones Combining an ultra low profile design with extreme strength and durability, Rob Allen bridles ensure maximum spear groove contour resulting in efficient energy transfer to the spear. Stainless Cable Wishbones Made from toughened nylon inserts with rugged 2mm stainless steel cable. Antline Wishbones Made from toughened nylon inserts with more durable and hand friendly 270kg Antline for exceptional bridle strength.