Markers, such as line arrows and cookies, are used on guidelines in overhead environments. They provide critical information to divers following the line. The Highland markers are strong and durable. They are available in high-visibility white or glow-in-the-dark. They can be written upon with a permanent marker. 

Features:

• Sold in packs of 10
• Made from durable, non-corrosive plastic material for years of safe diving
• Highland markers are available in white or glow-in-the-dark versions for low light conditions
• These markers fit perfectly on the Highland Cave Marker Holder
• Line Arrows are 3.3” long,1.97” wide at the base and 0.15” thick
• Line cookies have a 2.16” diameter and are 0.15” thick