For keyboard tray choices there are various ideas depending on your needs and the planned budget. There are: spring & ball bearing keyboard trays; spring non-ball bearing trays; lever & ball bearing drawers; lever non-ball bearing and basic drawers.
The discrepancy between them is considerable judging from the ergonomic point of view. If we take basic keyboard drawer 每 it is the simplest solution which can not only meet your fundamental needs but also economize your money. Usually it comes with a mouse tray which can be adjusted to your personal characteristics 每 either right or left handed. The pros is that such tray can do with practically any type of work surface, providing you comfort and nice performance. The compromising point here is that basic models are made of ABS which has good features alongside light weight, though it is not for sure steel which is to serve you lifelong.
Spring & ball bearing keyboard trays, on the contrary, are manufactured with the usage of aluminum alloy, steel and foam what guarantees high safety and perfect reliable service. Such drawers are composed of keyboard clamps, mouse trays and wrist rest area. Presence of a ball bearing mechanism provides smooth work; besides there is a spring assist mechanism which lets you make the required adjustments without the lever and avoid extra friction. Your keyboard rack and desk keyboard holder can tilt up to 19 ∼, mouse tray rotation is 360 ∼. You can also adjust height.
Lever and ball bearing keyboard holders have got just the same characteristics as spring and ball bearing have. The only significant difference is that there is highly functional lever which allows you make height adjustment any time you wish without excessive efforts.
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