Heavy duty retractable snap off trimming knife 18mm faithfull faitkrs18hd, the faithfull heavy duty retractable snap off trimming knife has a two function button that enables the knife to be used as an auto retracting safety knife or as a fixed blade knife. The first button reveals the blade when pushed forward and is sprung to retract the blade when released. The second button is a ratchet lock blade slider that allows multiple blade positions for custom cutting depths. The aluminium body is fitted with a dual compound abs and tpr soft grip for comfort and features a hole for attaching to a lanyard. The blade holder is made from stainless steel for durability. The end cap is removable to allow loading of new blades and features a handy slot for snapping off blades safely.this faithfull heavy duty retractable snap off trimming knife is supplied with an 18 x 100 x 0.5mm, 8 segment, sk5 steel blade. Spare blade code faitkbs18 pack of 10 blades. Specification overall length 195mm 7.1 2in faithfull faitkrs18hd heavy duty retractable snap off trimming knife 18mm