This compression bolt features a stepped Allen key hole which is 1/4” and 6mm. This allows the use of either a standard or a metric Allen key for the same bolt. The reason for this was to make adjusting the headset tension less of a hassle, since the bolt it’s replacing is usually something that requires a crescent wrench (adjustable spanner). Our bolt allows the use of just one tool whether you have a stem with 1/4” or 6mm bolts. This is all in the pursuit of having fewer tools to lug around. The Allen key hole can withstand 55 lb/ft before distorting when the tool is properly seated.
If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or fitted.More information on returns