Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to buy a circular saw [title] See what is available for you to buy. [step] You will find there are three types of circular saws. The differences are based on how they operate or how the saw blade is turned as well as how they are powered.

Ending1: [substeps] Square saws have 2 different mechanisms. The primary engineering power source consists of a spinning switch that goes from one side of the circular saw to the other. Ending2: There are : [substeps] Induction saws, which use electric or snap. The number one perk for circular saws is that they are simple and non-electrode free. Ending3: [substeps] The direct drive, or sidewinder, is the saw you are probably the most familiar with. This saw, with the blade attached directly to the motor, is powered by 110 house current and normally is the least expensive of the three types. Ending4: The rolls of your wheel should be a map of specific gears while gears should be a guide for you, especially that of the larger 1920 l wheel. The very first type of wheel is the main one.

Answer format: ending1/ending2/ending3/ending4