A lock pick tool is a long, thin metal piece with a curved end that’s shaped for different types of locks. A good, standard set contains a short hook, ball pick, and tension tool (which can be any tool that creates torque like a flathead screwdriver).
The standard short hook is the most basic and versatile pick in the professional lockpicker’s arsenal and mastery of this pick often correlates with mastery of lock picking itself. The ball pick is similar but has a half or full circle shape and can be used to open wafer locks. The gem pick adds a pointed tip to the end of the short hook and is commonly used for raking (a technique that involves rapidly sliding the pick past all pins to bounce them up to shear lines).
Lock Pick Tools: A Comprehensive Guide to Picking Locks Like a Pro
Other more advanced tools include rake picks which are shaped to mimic various pin height key positions. These can be a lot easier to use than a simple snake rake but require more practice. Other picks can be shaped to facilitate rocking, which is a gentle and slow method of raking that requires less skill.
Some of these more advanced tools can be quite expensive, but they’re not necessary for a beginner to learn the basics. It’s best to just get a few high-quality, individual or small form lock pick sets and focus on learning them. Swapping between 17 different picks will only confuse you and make it more difficult to progress as a lockpicker.