The GTSL90 surface mount track is similar in size and shape to the GT90, but is made from a high end, super strong polymer. Designed for light to medium duty applications, the single GTSL90 kit comes ready to install and includes either a 4", 8", 12", or 16" track, drilled and with hardware. The optional FullBack backing plate provides easier installation and increased security. Want to add some style to your rigged platform? Available in Black and Orange. <br /> <br /> Not intended for use with the RAM Mounts Quick Release Track Base. <br /> Super high end polymer is designed for harsh marine environments | Compatible with 1/2" wide track hardware | Hole spacing 1-3/4" | 0.90" wide x 4" long | U.S. Pat. No. 9,671,060 B1 | Made in the USA | Covered by our Built for Life Guarantee | SKU: GTSL90-OR04