Highland by XS Scuba is a durable and reliable Rubber Boot for your Thin Line SPG. It will help to shield your gauge from collision, scratches, and general wear-and-tear. The boot is designed for gauges measuring approximately 2" (5.1 cm) in diameter and 0.75" (1.9 cm) in depth. It also has three loops on the left, right and on top, allowing to attach a clip or lanyard. A strong thermoplastic material ensures that the boot will serve you a long time.