Detectable factory pen with gel ink - preferred option for chilled and sub zero applications. Benefits from superior retractable cartridge mechanism, virtually indestructible pocket clip and large lanyard loop. Available in four housing colours (blue, red, yellow and green) as well as two ink colours (black and blue). Manufactured by Retreeva Global. Supplied in packs of 25.Maximum detectability - Metal and x-ray detectable pens moulded from FDA food contact approved in the universally accepted blue colour for visual detection.Positive retracting mechanism - Cartridge will not jump out of position however much pressure is exerted on writing point.Highly visible ink indicators - Dominant top button and large window identify ink cartridge colour.Strong pocket clip - Designed as virtually unbreakable. No need to specify model without clip.Unique cartridge suspension - Provides that firm writing experience without the need for a metal spring.Smooth finish - Comfortable to hold, retains grip, easy to clean.Contoured for thumb and finger - With textured surface for enhanced grip without compromising hygiene. Large lanyard loop - Intended for a real lanyard, not just a thread.Safe under duress - Moulded from shatter resistant polymers to avoid splintering if crushed.Long writing life - superior quality European ink cartridge with Tungsten Carbide ball for anti-abrasion, smooth, consistent ink flow. More than 1.8km of writing length!Gel ink - preferred option for chilled and sub-zero applications. Maintains consistent flow of ink.Choose from two ink colours Retreeva Global metal and xray detectable pen housings conform with European food contact regulation EC 1935/2004 and meet FDA standards for use in the food, beverage, medical and pharmaceutical industries. Ink cartridges comply with ISO12757-2.