Miscellaneous Diving Double Edge Fixed Blade Knife4.125inDouble Edge Blade M3346. 8 1/2" overall. 4 1/8" double edge blade with partial serration on one edge. One piece stainless construction. Black molded plastic sheath with rubber arm/leg straps. Made in China. Specifications for Master Cutlery Diving Double Edge Fixed Blade Knife 4.125in: Manufacturer: Master Cutlery Blade Length: 4.13 in Overall Length: 8.5 in Blade Shape: Double Edge Blade Material: Steel Serrated: Partial Sheath Material: Plastic Package Contents: Master Cutlery Diving Double Edge Fixed Blade Knife 4.125in Miscellaneous M3346: Diving Double Edge Fixed Blade Knife4.125inDouble Edge Blade