The Close Quarters ASTM F1807 PEX crimp tools feature handle openings up to 70% smaller than standard, providing maneuverability in tight spaces. Available in ½- and ¾-in. sizes, they are ideal for making connections in potable water and radiant heating applications. Features include durable, glass-filled polycarbonate E3 handles; a built-in, Go/No-Go gauge; and an adjustable lock screw. They are made for use with ASTM F1807 copper crimp ring PEX tubing connections.