ATS stands for "Adjustable Tension System," a  system specially developed for slip joint  folding knives that allows users to  customize spring tension. The principle  involves  rotating an eccentric spacer sleeve (located at the handle’s center) to adjust the back spring’s position, thereby altering tension levels. Three settings are  available: high,medium, and low. To adjust, simply  turn the central screw clockwise with a wrench. The tension cycles through the sequence 0-1-2-3-2-1-0, with each level corresponding to a specific position.

Designed by Carson Huang (2013), this feature  combines intuitive operation with precision  engineering. This supplemental safety  mechanism for frame locks activates automatically upon opening the knife. To close the blade, slide the safety tab downward while disengaging the frame  lock. A must- have for frame lock lovers with higher demands.

While G10 composite is commonly used for handle  scales, its application as a functional  spring component is innovative. Key  advantages include: Aesthetic Integration: Colors seamlessly match the  handles. Reduced Weight: Enhances portability  without compromising durability. Technical ingenuity ensures reliability: A steel  insert at the blade contact point mimics the  longevity of traditional steel springs. Rigorous  stress and endurance testing guarantees  performance, featured in our LUX series.

Crafted from a single folded sheet of metal, this  unified handle replaces conventional double-plate designs. Benefits include:Enhanced  Stability: Monolithic construction minimizes number of parts.Lower Mass: Streamlines overall weight.  Precision machining ensures symmetrical alignment of components. Applied to crossbarlock models like Sacra and Perix, this design delivers unparalleled  smoothness and tactile satisfaction during use.

The ability to replace the handle scales without affecting the construction is the wish of many fans, which RSK has now responded to. RSK's interchangeable scales have two main features: 1. After the scale is removed, the knife can still be used. 2. You only need to tighten/loosen a single screw on one side to change the scale. The first knife with this creation was the RB-5. RSK offers G10 in various colors, as well as titanium and copper scales.