KS4038 Kershaw Tumbler Sub-FramelockThe KS4038 Tumbler is a compact sub framelock folder built around a 3. 25" stonewash D2 blade that balances edge retention with ease of sharpening, making it practical for EDC work. The black G10 handle with carbon fiber inlay and extended tang offers solid grip geometry and durability without excess weight, while the framelock mechanism provides reliable lockup for a knife this size. At 4. 5" closed, it fits easily in a pocket or pack and includes a