On Tue, 13 Dec 2016 14:31:02 +0000, Stormin' Norman advised:

Yes, HF will take them back.

I purchased the equivalent of this SDS hammer drill at Harbor Freight
a few years ago and it is one of my favorite tools. It drills into
concrete like it is butter and with the chisel bits, it allows us to
break up smaller sections of concrete with relative ease (compared to
using manual tools, not compared to a full size jack hammer...)

See: http://bit.ly/2gD8KNH

I got it for $49 on sale or with a coupon, can't remember which.

Yours is better than mine, but I paid around the same price.
Mine is 1/2 inch chuck with 7.5amp motor, while yours is a 1-1/8 in. chuck
and a 10 Amp Heavy Duty SDS Variable Speed Rotary Hammer motor.

Chicago Electric Power Tools 69274 10 Amp 3-in-1 1-1/8" Variable Speed SDS
Rotary Hammer, Harbor Freight item#69274

It seems that yours uses the funky shaped SDS bits I bought!

Why are they shaped that way anyway?