
A bit expensive just for the hub, but the reason I buy it instead of the adapter is to save space. takes up only a few millimeters of space when I connect 1/2 sockets to my 3/8" pneumatic ratchet. It says it's for impact sockets, which is great. I have a 1/2" air impact wrench and a full set of 1 /2" power sockets. I just received a 3/8" air ratchet that I want to use impact bits on. This is done without sacrificing too much the benefits of a ratchet (suitable for tight spaces).

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