OLFA WORKS Outdoor Utility Knife OD OWOUK1OD. 25" (18.42cm) closed. 4" (10.16cm) black oxide coated serrated tool steel blade. OD green synthetic handle. Lanyard hole. Rachet-Lock wheel secures blade firmly at any blade position. Stainless blade channel. Retractable and replaceable utility blade. Boxed. Specifications for OLFA WORKS Outdoor Utility Knife OD: Manufacturer: OLFA WORKS Blade Length: 10.16 cm 4 in Closed Length: 184.2 mm 7.25 in Package Contents: OLFA WORKS Outdoor Utility Knife OD