QBR-18 Retractable Metal Utility Knife. The QBR-18 Utility Knife is contractor quality with a die cast metal body, ergonomic rubber grip and three secure locking blade depths. It's all metal construction is extremely durable featuring a convenient tool free blade change with it's integrated hinge design and easy-open dial. Purchase with the UKH-326 Leather Holster. Heavy duty metal body, 3 secure locking blade depths, Fits SP-92, SPS-92 and HB-96 Blades, Ergonomic / Rubber grip, Holds 5 additional blades, Hi-Visibility Yellow. Max. Blade Extension : 14/16 inch ; Overall Height (in inches) : 1 ; Overall Length (in inches) : 6.75 ; Overall Width (in inches) : 1.5