The is one of the following group of closely-related chest ascenders:

Image Ascender Cam Cam Safety
CIC CIC Symmetrical Aluminum /w Tab
Climb Tech Climb Tech Symmetrical Aluminum /w Tab
Epic Peak Epic Peak Symmetrical Aluminum /w Tab
Fixe Fixe Asymmetrical Aluminum /w Tab
GM Climbing GM Climbing Symmetrical Plastic-covered
Aluminum
International Safety<BR>Components RP229 International Safety
Components RP229
Asymmetrical Aluminum /w Tab
NTR NTR, Version A Symmetrical Aluminum /w Tab
Image Ascender Cam Cam Safety
Rock Empire Rock Empire Chest Symmetrical Plastic-covered
Aluminum
WestFall Pro RP229 WestFall Pro RP229 Asymmetrical Aluminum /w Tab
Vento (Венто) Vento (Венто) Asymmetrical Aluminum /w Tab
Xinda Xinda, Version A Symmetrical Aluminum /w Tab
Yoke Yoke Asymmetrical Aluminum /w Tab
Z&W Z&W Symmetrical Aluminum /w Tab
 

I obtained most of these from China. The others (e.g., the International Safety
Components
and WestFall Pro from the U.K., the Rock Empire from the Czech Republic, the Vento from Russia) were made in China as well. These are all well-made ascenders and the prices that I paid, even with shipping, were far below those of the European-made equivalents. One potential concern is that we don't have the experience with Chinese metallurgy and quality control that we have with American and European devices, but I have no evidence suggesting that the metallurgy is unacceptable and the quality certainly appears to be fine. I'm not making any recommendation on this point one way or the other.

All sharp edges have been removed, except for those on the inside of the attachment holes on a few of these. The user should round the attachment holes with a Swiss file.

The cams are all very well made. There are two distinct cam types, "symmetrical" and "asymmetrical." The reverse side behind the cam face is parallel to the cam axle on the symmetrical cams, and sloped on the asymmetrical cams. This has no practical significance. The asymmetrical cams have a (3)^3(2)(1S1)^4(3)^2 tooth pattern while the slot in the symmetrical cams is slightly longer (extending to between the top tooth pair), giving a (3)^3(1S1)^5(3)^2 tooth pattern. This also has no practical significance.

Another minor difference is that the cam rivet on the Yoke has a smaller head than the ones on the others.

All of these have aluminum tab cam safeties, but the ones on the GM Climbing and Rock Empire are plastic-covered. I don't find a particular advantage or disadvantage to the plastic tab, but one may have a personal preference. Mine is to save weight by choosing one without the plastic cover.