This is the Caboose Industries HO-Scale Sprung Ground Throw Multi-Pack. This package includes five HO-Scale Sprung Ground Throws. The 200S series ground throws are internally sprung stands. Stainless steel springs take up the over travel and maintain tension to hold the movable points against the stock rails of the turn out. These springs make the machines easy to mount to the turnout. FEATURES: Molded of strong, self-lubricating black delrin. External cam provides maximum life and travel. Cam design provides lock on both ends of the throw from 10° above horizontal to the extreme down position. Direct connection to the turnout through a pin on the slide bar. Detent to assist in holding the handle horizontal.