Kryptonite New York Noose (inc lock) + Kryptonite ground anchor. This is rated "Gold" for insurance purposes. The "noose" bit is very important. If I hadn't been able to thread it through itself, like you see in the pic, the chain would have been too short.
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This was installed in my garage. The ground anchor needs three 5/8" holes to be drilled. Three different hammer drills (1/2" chucks) would not do the job, the drill bits kept spinning in the chucks. I had to hunt around to borrow an SDS hammer drill. These SDS electric hand drills have a more direct drive of the SDS drill bit and don't slip, like ordinary round bits did in the three jaw chucks. They are also more likely to produce a 5/8" hole that is actually parallel! The importance of that will be revealed when you try to fit the steel Rawlbolts into the holes!!
By the way, if one of the Rawlbolts dismantles itself while in the hole before you try to screw a bolt into it, all is not lost! You can get it out, it just takes patience. You need a length of wire with a small right angle hook bent onto the end of it. I used an old gear cable. Reassembling the Rawlbolt takes more patience, it took me about ten mins to do the first one and just a few mins to do the others. Yes you read that right, others!
I have no idea if it is or not. I saw a video of two guys trying to bolt crop a Kryptonite New York Noose. They were big guys and had a pair of brand new four-foot long bolt croppers. They failed, even when they were standing on the cropper handles. They succeeded only when they used a pair of older croppers that crucially had notches in the blades (from long use, not design). the notches stopped the hexagonal cross section links from being spat out by the straight blades.
Brilliant!
At the time, I wished I'd had an SDS drill. I managed to restrain myself from going out and buying one (ouch £££££)
But now I'd have opted for resin fixed bolts!
WHS
