Premium Blade : Crafted from corrosion-resistant 9Cr18MoV stainless steel, the 3.47" drop point blade offers excellent edge retention and a smooth satin or stonewashed finish. Smooth Action : Featuring caged ceramic ball bearings and dual opening options — flipper tab and thumb stud — for fast, reliable, and intuitive deployment. Secure Locking : The button lock mechanism provides smooth operation with optimized spring tension to prevent accidental opening while maintaining easy release. Durable Handle : Ergonomic Micarta or G10 handles in black, brown, green, or natural offer enhanced grip and comfort for extended outdoor use. Everyday Ready : Tip-up pocket clip supports left or right-hand carry; ideal for hiking, camping, or everyday utility tasks. Specifications: Model Number: S21007-1 Overall Length: 7.81" / 198.4mm Width: 1.35" / 34.3mm Overall Height (Include Clip): 0.74" / 18.8mm Blade Length: 3.47" / 88.2mm Closed Length: 4.34" / 110.2mm Blade Thickness: 0.12" / 3mm Handle Thickness: 0.51" / 13mm Knife Weight: 3.59oz / 101.8g Blade Material: 9Cr18MoV Blade Hardness: 58-60HRC Blade Grind: Flat Blade Finish: Satin Blade Type: . Drop Point Handle Material: Micarta Handle Color/Finish: Black Liner Material: Stainless Steel Liner Color/Finish: Gray Pocket Clip: Tip-Up, L/R Clip Material: Stainless Steel Screws/Thumb Stud Material: Stainless Steel Pivot Assembly: Caged Ceramic Ball Bearing Locking Mechanism: Button Lock Model Number: S21007-2 Overall Length: 7.81" / 198.4mm Width: 1.35" / 34.3mm Overall Height (Include Clip): 0.74" / 18.8mm Blade Length: 3.47" / 88.2mm Closed Length: 4.34" / 110.2mm Blade Thickness: 0.12" / 3mm Handle Thickness: 0.51" / 13mm Knife Weight: 3.59oz / 101.8g Blade Material: 9Cr18MoV Blade Hardness: 57-59HRC Blade Grind: Flat Blade Finish: Black Stonewashed Blade Type: Drop Point Handle Material: Micarta Handle Color/Finish: Green Liner Material: Stainless Steel Liner Color/Finish: Black Pocket Clip: Tip-Up, L/R Clip Material: Stainless Steel Screws/Thumb Stud Material: Stainless Steel Pivot Assembly: Caged Ceramic Ball Bearing Locking Mechanism: Button Lock Model Number: S21007-3 Overall Length: 7.81" / 198.4mm Width: 1.35" / 34.3mm Overall Height (Include Clip): 0.74" / 18.8mm Blade Length: 3.47" / 88.2mm Closed Length: 4.34" / 110.2mm Blade Thickness: 0.12" / 3mm Handle Thickness: 0.51" / 13mm Knife Weight: 3.59oz / 101.8g Blade Material: 9Cr18MoV Blade Hardness: 58-60HRC Blade Grind: Flat Blade Finish: Satin Blade Type: Drop Point Handle Material: Micarta Handle Color/Finish: Brown Liner Material: Stainless Steel Liner Color/Finish: Gray Pocket Clip: Tip-Up, L/R Clip Material: Stainless Steel Screws/Thumb Stud Material: Stainless Steel Pivot Assembly: Caged Ceramic Ball Bearing Locking Mechanism: Button Lock Model Number: S21007-4 Overall Length: 7.81" / 198.4mm Width: 1.35" / 34.3mm Overall Height (Include Clip): 0.74" / 18.8mm Blade Length: 3.47" / 88.2mm Closed Length: 4.34" / 110.2mm Blade Thickness: 0.12" / 3mm Handle Thickness: 0.51" / 13mm Knife Weight: 3.90oz / 110.6g Blade Material: 9Cr18MoV Blade Hardness: 58-60HRC Blade Grind: Flat Blade Finish: Satin Blade Type: Drop Point Handle Material: G10 Handle Color/Finish: Natural Liner Material: Stainless Steel Liner Color/Finish: Gray Pocket Clip: Tip-Up, L/R Clip Material: Stainless Steel Screws/Thumb Stud Material: Stainless Steel Pivot Assembly: Caged Ceramic Ball Bearing Locking Mechanism: Button Lock * Note that the button lock is designed with a spring under the button to provide just the right amount of tension so that there is enough resistance to avoid accidental opening, while still offering the ideal amount of pressure to release the lock.