Memory Alpha
Memory Alpha
Multiple realities
(covers information from several alternate timelines)

A laser tool was any type of tool that operated using lasers. Specific examples included laser drills, laser torches, and laser welders.

Quark's laser tool

In 2370, Rom and Quark used a laser tool to unseal a strongbox they had located in Deep Space 9's old chemist's shop. (DS9: "Necessary Evil")

The tool was identified in the episode's script.

Paris using a laser tool

Tom Paris used a type of laser tool for conducting repairs in 2371, while working at the construction site at the New Zealand Penal Settlement. (VOY: "Caretaker")

The term "laser tool" comes from the props section on the call sheet for the day of filming.

F8 using a laser tool

On First Contact Day in 2385, the A500 unit F8 used this laser tool as a makeshift weapon to kill several workers at Tri-hy station A19 before turning it on himself. (PIC: "Maps and Legends")

Korath's laser tool

In an alternate 2404, Korath used a laser tool to modify a Cardassian disruptor. (VOY: "Endgame")

According to the script, the laser tool was used "to weld a component to" the weapon.