Why You Need It
Inboard boats have what is called a tapered shaft, which means the diameter of the prop shaft the propeller sits on gets larger further away from the end. That taper is designed to allow the prop to "seat" on the shaft for better power transmission, as the prop is literally forced further up the shaft when driving the boat forward in the water.
That taper can make it extremely difficult to remove the prop when replacing or exchanging it with a new one. Many people think the prop will simply slide off once the cotter pin and nut have been removed, and are frustrated to find that is not the case, especially when their prop is damaged, and they have a replacement but can't get the ruined one off.
Not having a prop puller to go with your spare prop is akin to having no jack in your car; a spare tire doesn't do you any good if you can't get the old wheel/tire off to replace it.
ACME's c-clamp propeller puller is the highest quality prop puller available, constructed of drop forged aluminum for durability and strength, it's a tool you will buy one time, and use for as long as you own inboard boats.
Not Just a C Clamp, It's a Prop PullerReview by Receps on 11/7/12
I must admit that I thought the Acme C-Clamp was just another Home Depot tool that I probably have in the garage. That was until I tried to get my prop off. This is by far the most important tool to put under your seat. I have used mine every year for the past 4. Our season is getting longer which means more stuff to hit during the high water months. This thing has saved me too many times to count. I bought mine in the Acme Weekend Saver Kit but thought this was a more appropriate spot for my review. Friends don't let friends waste valuable time off the water.
AWSOME TOOLReview by Aaron on 7/8/12
I sucked it up and bought this tool a month or to ago. AWSOME TOOL!!! use to i used a set of 3 prong jaws/ gear puller to get my old props off my 1988 ski natique. but since i bought this tool and it has made a 3 hr job into a few minuit job. i wish i would have bought this years ago.