According to the spec sheet, the chain weighs 1.65 pound per foot. Therefore my chain is 6.6 pounds. My Viro model 4126 lock is listed as 1.92 pounds, so a total combined weight of 8.5 pounds. I've added a woven nylon sheath I bought for $1 a foot, but it is pretty light. After cutting the wrap to length, I dipped the cut ends into some tool handle plastic coating I got at Lowes, which worked out well.
I also found a plastic container at Dollar Tree @2 for $1, and wrapped it in black duct tape for added strength and color. It was flexible enough to conform to the space between the seat post and the rear rack, and I put the lock in it after wrapping the sheathed chain around the frame handle.
Trust me that this chain and lock combo are pretty sturdy and heavy. I have a lot of confidence in the security they provide. Total for each set was $80 per lock, $48 for chain, $4 for chain wrap, or $132 per bike. I figure with two bikes and two chains I can chain them together around a bike rack for even more security.
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