Keep your battery solidly in place with this Extreme Max Group 27 Marine Battery Tray Holder with Velcro Strap. Eight separate mounting holes around the rack make it fast and simple to install. The polypropylene tray holder with a strong Velcro strap is custom designed to fit Group 27 Marine batteries, and features reinforced corners to protect and secure your device at all times. Its hard, plastic construction is impervious to battery acids and corrosion, helping the rack last longer. The adjustable heavy-duty Velcro strap allows you to secure and release your power source quickly and easily with the security of 300 lbs of breaking strength, even in tight, limited spaces. Keep your battery in place and connected with the help of this custom-fit battery tray. Its slim, lightweight and durable construction securely holds everything together without adding a lot of bulk to the area.