For those who couldn't stretch the budget for the Tesla Model S 33% off Deal 18 months ago, this 20mm Threaded Lockring from DETA may be easier on the purse.
Best value can be had when purchasing two in one transaction with rounding taken into account (effectively 50% off)
Unsure if it's the Penrith Store only.
A real ozbargainer will buy 100 of those and never use them but he will save 2 bucks