As there are two types of fittings for paddles, you need to know what drill or mixer they attach to and what speed is required.
Paddles with a hexagonal shaft are for use with drills fitted with a drill chuck. These paddles should be used in slow to medium speed drills with speeds under 1000 RPM.
RPM stands for revolutions per minute, which is the number of times a drill chuck turns completely in one minute.
Listed below are the drills that a hexagonal shaft paddle can be used with:
300w
400w
450w
500w
600w
700w
Listed below are the most common chuck sizes, and their metric equivalents:
10mm – 3/8″
13mm – 1/2″
16mm – 5/8″
Depending on the size of the hexagonal shaft on the drill powered paddles it will fit into one of these chuck sizes.
If the hexagonal shaft is 10 mm or smaller you can use a 3/8 drill chuck, 13 mm or under, a 1/2 chuck and 16 mm or under a 5/8 chuck to power your paddle.
Use a measuring tool to determine the diameter of the shaft, and measure across the flats. Knowing the size of the hexagonal shaft then gives you the size of the drill chuck it will fit.
Paddles with an M14 thread will fit directly into the front end of a power mixer.
A paddle with an M14 thread can be used in drills between 500 and 1000w
With the M14 thread paddles, they will fit any powered mixer that has a M14 thread connector. The M14 thread will be the same size so there will be no need to worry, as long as the powered mixer is able to fit an M14 thread.