Having the right spares on-hand when out diving can make or break a dive. Don't let a Broken Rail on your Hollis SMS 50 or 100 Side-Mount BCD Ruin a Day-of-Diving, always carry a spare. The Hollis Gear Rail Kits are manufactured from Corrosion Resistant Stainless Steel and come complete with Mounting Hardware. These Hollis Rail Kits are Easy-to-Install and make a great Save-a-Dive Kit Item. Rail Kits are covered by a 12 month limited warranty.