Stubben Weymouth Copper Mouth Bit Size:13.5cm 360 degree mounting on steel 360 degree mounting on steel posts for correct orientation toward the sunAllows the energizer to be mounted on a steel post that is already part of the fence line feel the mist on their snout and smell the scent of citronella (if there's a citronella scented refill in the module) all within a second of barking but allows a quicker more direct action between reins and mouthpiece Stübben Steeltec quality:• No rough edges that could hurt the horse's mouth• Long durability due to selected materials• A special processing technology ensures that bit holes and link pieces remain intact for longer