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Editor's Notes & Price Research
The diamond-coated tips increase friction and reduce slippage. Fold up ball-end hex keys lock at 90° and 180° so you'll have the right angle to reach that stubborn fastener.
Edited April 2, 2018
at 07:08 AMby
Note that the metric hex key set is also on sale for $8.99 right now. This set usually hovers around a sale price of around $18. I got this at around $14.99 and have been watching the metric set for a while and I had never seen the price this low. The tool itself works very well -- it doesn't slip and you can go in at a bit of an angle because of the ball tip.