Parker Sidewinder Cocking Device Hand crank cocking device. Unique roller glide hooks for easy, smooth cocking effort. Will not scratch the barrel finish. Multi-strand nylon rope is tough and durable. Extra-long rope accommodates all Parker crossbows. Machined and knurled handle for a solid grip. Reduces cocking effort for consistent string alignment. Improves accuracy dramatically. For left- or right-hand use. Folds into pocket size for convenient carrying. Weight: 18 oz.