Ontario Knife RAT-1 Knife 5in. Closed ON. This folding knife from Ontario Knife features a 3 1/2" blade and pocket clip configurations that include tip down and up left and right handed. Specifications for Ontario Knife RAT-1 Pocket Knife: Lock Type: Liner Lock Blade Length: 3.5 in (8.89 cm) Closed Length: 5 in (12 cm) Edge Type: Plain Blade Grind: Flat Blade Thickness: 0.12 in (0.3 cm) Overall Length: 8.5 in (21.6 cm) Hardness: 58-59 HRC Blade Finish: Satin Blade Material: AUS-8 Package Contents: Ontario Knife RAT-1 Folding Knife Ontario Knife ON8848CB: RAT-1 Knife 5in. Closed