The link supplied only takes me to the OEM's main web site and not to a particular grapple I can compare the specifications on. I have read the first 6 pages of this post, skipped the rest of them and have the following comments based strictly upon my personal experience with the equipment I purchased and how I am using it, all on my very densely wooded, extremely rocky land. The clay is so dense one is not able to use a Bully Tools pointed shovel to manually dig a hole of any size, with the clay wet or dry. I am using the tractor to dig up tree stumps I have left and dig out large rocks/small boulders using a CID stump bucket, WildKat 48" rock grapple bucket (525#) and Dirt Dog 72" (710#) ROBB. I purchased all of this equipment knowing lesser built attachments would not survive my usage.
While deciding on my equipment purchases, I called the retailers or OEMs for specific information on construction, especially WildKat due to earlier posts on TBN about 1/8" metal. Many made equipment of varying robustness, designed I believe for competitiveness in this market we enjoy. This means there are equipment in various weight/strength vs. cost ratios and one needs to know what one's needs are and make the correct purchasing decisions.
Rest assured that most of the ground engaging equipment equipment sold at TSC, Agri-Supply, Northern Tool, many farm stores and tractor dealers, and everything I have seen advertised on CraigsList in my area, would be damaged in short order on my property and attached to my tractor. I believe that all of the structural steel in my equipment is at least 3/8" and I seem to recall some 5/8" in my rock grapple. I have used all of my attachments to the maximum capabilities of my tractor- every time I use it, and only have some scratched paint and a broken tip on one of the ROBB's shanks to show for all of the usage. I have had a rock and a stump in the grapple (very low to the ground) that caused the rear tractor tires to slowly bounce off the ground as I gingerly moved each item out of my way, and I have loaded rear tires, along with that ROBB on there, plus 100# of tools. When I dig out a stump, I usually end up with an 8' - 10' diameter hole, 3.5' - 4' deep. The large diameter is due to large rocks below ground level surrounding the stump. All of my equipment seem to only have high quality components, including the Parker hoses and Italian 1/2" ISO 16028 couplings on the WildKat rock grapple.
I will purchase any more equipment I may need from any tractor equipment OEM I currently own, as they have proven to me they make quality equipment for my needs. Plus all of the FEL attachments have a great fit to the skid steer tool bar with no slop. I am very pleased with it all.
Attached are a few pics of my property, most of which have been posted on TBN in other posts. The rocks in the bucket are not the large ones, with each one coming close to maxing out the tractor.





