Anyone try the Alchemy cockring?

I will be purchasing a few items from from amazon soon and wanted to add a good cockring to my arsenal. While searching I found this...

http://www.amazon.com/gp/product/B002JINO2W/ref=ord_cart_shr?ie=UTF8&m=ATVPDKIKX0DER

The review says it's the best metal cockring you can find on amazon. It says it's made of steel with chrome plating and is seamless. This sounds really cool being that it's steel and will last forever. I was thinking about getting the large and small size for different restriction for after a nice Bathmate session. Or maybe even using the smaller one on my balls with some mini scrunchies to keep my balls from retracting during the day. Has anyone ever tried it? I saw one thread on MOS where this dude talked about them.

Also I wanted to know what other pe goods should I consider getting from amazon? I have the alchemy rings, whatagrip, and pump sleeves already on my list. The pay check is on the way so I will be making the purchase soon. Thank you

I was actually thinking instead of getting the rings, a better decision might be to buy materials for the captain's wench since they have the materials on amazon. The CW sounds good to use as an ADS and small enough so you can stealth hang lol.

Here's my shopping list...

Universal Pump Cylinder Sleeves (2)
Unique Whatagrip Tennis Overgrip (4)
ONE-WRAP Adhesive Straps
cable clamps (4)
Waxman 7500 Bar Style Gripper Pads, Black, 4-Inch by 5-Inch
Sticky-Back(R) Industrial Tape 2 Inch x 4'- Black

The whatagrip is used as under wrap with thera-band over it. Others as well as myself find to be the best wrap combination which will be perfect for the LengthMaster. The rest is the materials to make the Captain's wench. Anything else I should add? A must have item for pe that's cheap?