Add to Cart Quick view Relay Controlled Crystal Deck for 20 Collins & Drake Crystals NEW Collins MSRP: Now: $49.99 Was: This Relay Controlled Crystal Deck for 20 Collins & Drake large Crystals, is new old stock, in the original box. It holds 20 crystals and uses 10, 28 VDC relays to switch them. The cover is held... MSRP: Now: $49.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $49.99 Was: Subtotal: Add to Cart